Answers
When there is an increase in an activity, like sales or manufacturing, the overall amount of an expense, known as a fixed expense, does not change.
Thus, Normal definitions typically include the phrase within a relevant or appropriate range of activity since a change is likely to take place at fixed expense either an exceptionally high or low volume or expense.
Of course, the rent will probably need to adjust if sales quadruple or fall to 20% of the average level. However, as the extreme circumstances are outside of the relevant range for short-term analysis, the current rent of $2,000 is regarded as a fixed expense.)
The following are some instances of costs that are probably set within a fair range of retail sales, The yearly pay for the shop manager.
Thus, When there is an increase in an activity, like sales or manufacturing, the overall amount of an expense, known as a fixed expense, does not change.
Learn more about Expenses, refer to the link:
https://brainly.com/question/29850561
#SPJ1
Related Questions
CHEM FINAL TOMORROW!!! Need some help with concentration stuff. If someone could tell me how this works it would be incredibly helpful!!
Answers
The boiling point of a solution is influenced by the presence of solute particles, which can cause a change in the boiling point compared to the pure solvent. This phenomenon is known as boiling point elevation.
The magnitude of boiling point elevation depends on the concentration of the solute and the nature of the solute particles. In general, the greater the concentration of solute particles, the greater the boiling point elevation.
Comparing a 0.5m sodium chloride (NaCl) solution to a 0.3m aluminum sulfate ([tex]Al_2(SO_4)_3[/tex]) solution, we can determine the relative boiling point elevation.
Sodium chloride (NaCl) dissociates into two ions in solution (Na+ and Cl-), while aluminum sulfate ([tex]Al_2(SO_4)_3[/tex])dissociates into three ions (2[tex]Al_3[/tex]+ and 3[tex]SO_4[/tex]2-). This means that the aluminum sulfate solution will have a greater concentration of solute particles per mole than the sodium chloride solution.
Therefore, the boiling point of the 0.5m sodium chloride solution will be lower than the boiling point of the 0.3m aluminum sulfate solution.
For more details regarding boiling point, visit:
https://brainly.com/question/2153588
#SPJ1
balanced equation for the decomposition of aluminium tetraoxosulphate
Answers
2Al2(SO4)3(s) → 2Al2O3(s) + 3SO2(g) + 3O2(g)
This equation shows that when solid aluminium tetraoxosulphate is heated, it decomposes into solid aluminium oxide, and gases sulphur dioxide and oxygen. The coefficients in the balanced equation indicate that two molecules of aluminium tetraoxosulphate decompose to form two molecules of aluminium oxide, three molecules of sulphur dioxide, and three molecules of oxygen.
some1 please help me with this problem
for reference: it’s speaking about 3H2 + N2 -> 2NH3 (ammonia)
Answers
Theoretically, if 20 grams of hydrogen reacts then 112.5 grams of ammonia is produced.
The balanced chemical equation can be given as:
N₂+3H₂→ 2NH₃
From stoichiometry, 2 mol of NH₃is produced from 3 mol of H₂
5 mol of NH₃ will be produced from = 3/2×5 = 7.5 mol of H₂
∴mass of H₂=7.5×2= 15gm of H₂.
Excess reagents are those reactants in a chemical reaction that are not exhausted at the end of the reaction. A completely exhausted or reacted reagent is called a limiting reagent because its amount limits the number of products formed. In this reaction, the excess reagent is Nitrogen as 35 grams of nitrogen and 15 grams of hydrogen react to produce 34 grams of ammonia.
To learn more about ammonia, refer to the link:
https://brainly.com/question/29519032
#SPJ1
Identify reactions types and balancing equations???
Answers
The following chemical equations must be balanced:
1. N2 + 3 H2 → 2 NH3
Type: Synthesis reaction
2. 2 KClO3 → 2 KCl + 3 O2
Type: Single Replacement reaction
3. 2 NaF + ZnCl2 → ZnF2 + 2 NaCl
Type- Decomposition reaction
4. 2 AlBr3 + 3 Ca(OH)2 → Al2(OH)6 + 6 CaBr2
Type- Double Replacement reaction
5. 2 H2 + O2 → 2 H2O
Type: Combustion reaction
6. 2 AgNO3 + MgCl2 → 2 AgCl + Mg(NO3)2
Type: Synthesis reaction
7. 2 Al + 6 HCl → 2 AlCl3 + 3 H2
Type: Decomposition reaction
8. C3H8 + 5 O2 → 3 CO2 + 4 H2O
Type: Combustion reaction
9. 2 FeCl3 + 6 NaOH → Fe2O3 + 6 NaCl + 3 H2O
Type: Double Replacement reaction
10. 4 P + 5 O2 → 2 P2O5
Type: Synthesis reaction
11. 2 Na + 2 H2O → 2 NaOH + H2
Type: Single Replacement reaction
12. 2 Ag2O → 4 Ag + O2
Type: Decomposition reaction
13. C6H12O6 + 6 O2 → 6 CO2 + 6 H2O
Type: Combustion reaction
14. 2 KBr + MgCl2 → 2 KCl + MgBr2
Type: Double Replacement reaction
15. 2 HNO3 + Ba(OH)2 → Ba(NO3)2 + 2 H2O
Type: Double Replacement reaction
16. C5H12 + 8 O2 → 5 CO2 + 6 H2O
Type: Combustion reaction
17. 4 Al + 3 O2 → 2 Al2O3
Type: Synthesis reaction
18. Fe2O3 + 2 Al → 2 Fe + Al2O3
Type: Single Replacement reaction
Learn more about Chemical reactions, here:
https://brainly.com/question/14929452
#SPJ1
examples of chemical compounds that are formed by swapping the valencies
Answers
Some examples of chemical compounds that are formed by swapping the valencies are:
Sodium chloride (NaCl)Magnesium oxide (MgO)Carbon dioxide (CO2)Water (H2O)What is valency?In chemistry, one can analyze an element's combining capacity with other atoms through its valency, crucial for creating chemical compounds or molecules.
Recently, an article featured a comparable description detailing atomic valence as "the electrons utilized by the atom during bonding." There are also two distinct formulas available to determine the element's level of valence.
Learn about valency electron here https://brainly.com/question/28896521
How many atoms of carbon are there in 0.37 mol of procaine, C13H20N202. a "pain killer" used by dentists?
Answers
There are approximately 2.8939 x[tex]10^2^4[/tex] carbon atoms in 0.37 mol of procaine. The molecular formula of procaine (C₁₃H₂₀N₂₀₂), one can see that there are 13 carbon atoms (C13) in one molecule of procaine.
Avogadro's number (6.022 x [tex]10^2^3[/tex]) represents the number of particles (atoms, molecules, or formula units) in one mole of a substance
The number of molecules of procaine in 0.37 mol:
Number of molecules = 0.37 mol x (6.022 x[tex]10^2^3[/tex] molecules/mol)
Number of carbon atoms = Number of molecules x 13 carbon atoms/molecule
Number of molecules = 0.37 mol x (6.022 x [tex]10^2^3[/tex]molecules/mol)
= 2.22614 x [tex]10^2^3[/tex]molecules
Number of carbon atoms = 2.22614 x [tex]10^2^3[/tex] molecules x 13 carbon atoms/molecule
= 2.8939 x [tex]10^2^4[/tex]carbon atoms
Learn more about the atoms here
https://brainly.com/question/10847297
#SPJ1
Calculate the volume in L of Oxygen gas collected at STP if the sample has a mass of 2.67g?
Answers
Answer:
[tex]\huge\boxed{\sf 1.869\ L}[/tex]
Explanation:
Given that,
Mass = m = 2.67 g
Molar mass (O₂) = 16 × 2 = 32 g/mol
Finding no. of moles:We know that,
No. of moles = mass in g / molar massNo. of moles = 2.67 / 32
No. of moles = 0.08 moles
Also, we know that:
1 moles of O₂ at STP = 22.4 LMultiply both sides by 0.081 × 0.08 moles of O₂ at STP = 22.4 × 0.08 L
0.08 moles of O₂ at STP = 1.869 LSo, the volume of 0.08 moles of oxygen gas at STP will be 1.869 L.
[tex]\rule[225]{225}{2}[/tex]
‼️‼️‼️need help asap‼️‼️‼️
Answers
24. To calculate the molarity of a solution, we must first find out how many moles of [tex]BaI_2[/tex] are in the solution.
Molar mass of BaI2 = (1 x atomic mass of Ba) + (2 x atomic mass of I)
= (1 x 137.33 g/mol) + (2 x 126.90 g/mol)
= 137.33 g/mol + 253.80 g/mol
= 391.13 g/mol
Number of moles of BaI2 = mass of BaI2 / molar mass of BaI2
= 413 g / 391.13 g/mol
= 1.056 mol
the molarity of the solution using the formula:
Molarity (M) = moles of solute / volume of solution (in liters)
Volume of solution = 750 ml = 750 ml / 1000 ml/L = 0.750 L
Molarity = 1.056 mol / 0.750 L
= 1.408 M
Therefore, the molarity of the solution is 1.408 M.
25. a. [tex]P_20_7[/tex] - Ionic compound (Phosphorus(V) oxide)
b. [tex]SnBr_2[/tex] - Ionic compound (Tin(II) bromide)
c. [tex]Fe(OH)_2[/tex]- Ionic compound (Iron(II) hydroxide)
d. [tex]Cl_30_8[/tex] - Not a valid chemical formula
26.
A. (NH4)2CO3 is soluble in water (NH4) in an ionic substance called 2CO3 containing the ions carbonate and ammonium.
B. Fe(OH)2 is insoluble in water. Iron(II) hydroxide is only sparingly soluble.
C. CaOH is not soluble in water. Only very little calcium hydroxide is soluble.
D. PbCl2 is insoluble in water. The chloride of lead(II) is sparingly soluble.
27. FeS + 2KCl = FeCl2 + K2S
FeS is an insoluble precipitate.
2KCl dissolves in aqueous solution.
ZnCl2 + SrSO4 = ZnSO4 + SrCl2
SrSO4 is an insoluble precipitate.
ZnCl2 dissolves in aqueous solution.
28. In salt water, the solute is the salt (sodium chloride, or NaCl), and the solvent is water. The element which dissolves in the solvent to form a solution is called solute.
29. Charles's law states that, if the pressure and volume of a gas remain constant, the volume of a gas falls as the temperature increases. As a result, the capacity of the balloon will decrease as it ascends to altitudes where the temperature is -15 °C.
30. The average kinetic energy of the particles of a substance increases with increase in its temperature. This is because temperature is a gauge for the specific kinetic energy of the constituent particles of a substance. On the other hand, the average kinetic energy falls as the temperature increases.
31. When the volume of a gas decreases, its pressure increases. Boyle's law, which states that at a given temperature, the pressure of a gas is inversely proportional to its volume, describes this relationship. On the other hand, pressure falls when volume increases.
32. The pressure of a gas increases along with its temperature. Gay–Lussac's law, which states that the pressure of a gas is directly proportional to its temperature, given the volume and volume of the gas is constant, describes this relationship.
33. The volume of a syringe is reduced as a marshmallow is pressed and the plunger is depressed. As a result the pressure inside the syringe increases. This is because Boyle's law states that the volume and pressure of a gas are inversely proportional. The decrease in volume causes the air inside the syringe to contract, exerting more pressure on the marshmallow, which is then crushed.
Learn more about Charles's law, here:
https://brainly.com/question/12835309
#SPJ1
The Russian Mir space station used a chemical oxygen generator system to make oxygen for the crew. The system ignited a tube of solid lithium perchlorate (LiClO4) to make oxygen and lithium chloride (LiCl):
LiClO4 (s) 2O2 (g) + LiCl (s)
If you have 500 g of LiClO4, then how many liters of oxygen will the system make at the station’s standard operating conditions, a pressure of 101.5 kPa and a temperature of 21°C?
Answers
At the usual working conditions of 101.5 kPa and 21°C, the chemical oxygen generator system would generate roughly 220.84 litres of oxygen using 500 g of LiClO4.
We may use the ideal gas law and stoichiometry to calculate how many litres of oxygen are created by the chemical oxygen generator system employing 500 g of LiClO4.
We must first determine the moles of LiClO4. LiClO4 has a molar mass of approximately 106.39 g/mol. As a result, 4.704 mol of LiClO4 are produced from 500 g of LiClO4 using the formula: 500 g / 106.39 g/mol
We can see from the chemical equation that 1 mole of LiClO4 results in 2 moles of O2. 4.704 mol of LiClO4 will therefore result in:
2 mol O2 / 1 mol LiClO4 4.704 mol LiClO4 = 9.408 mol O2
The moles of O2 under the specified conditions must then be converted to volume. The ideal gas law, which goes as follows:
PV = nRT
Where:
P = pressure = 101.5 kPa
V = volume (in liters)
n = moles of gas = 9.408 mol
R = ideal gas constant = 8.314 J/(mol·K)
T = temperature = 21°C = 294 K (converted to Kelvin)
Rearranging the equation to solve for V:
V = (nRT) / P
V = (9.408 mol × 8.314 J/(mol·K) × 294 K) / (101.5 kPa × 1000 Pa/kPa)
Simplifying the units:
V = (9.408 × 8.314 × 294) / 101.5
V ≈ 220.84 liters
For more such questions on oxygen
https://brainly.com/question/15457775
#SPJ8
Which of the following describes an impact of the specific heat of water on the planet? (3 points)
A. Islands and coastal places have moderate pleasant climates.
B. Ocean waters experience sudden spikes and drops in temperature.
C. The internal temperature of living organisms varies over a wide range.
D. Inland places have minimal temperatures changes throughout the year.
Answers
An impact of the specific heat of the water on the planet is that islands and coastal places have moderately pleasant climates. Therefore, option A is correct.
The specific heat of water is relatively high compared to other substances. This means that water requires a significant amount of heat energy to increase its temperature. As a result, water has a stabilizing effect on the climate of coastal and island regions.
The high specific heat of the water helps to moderate temperature changes, resulting in milder and more pleasant climates in these areas.
Learn more about specific heat, here:
https://brainly.com/question/31608647
#SPJ1
What is the molal concentration of 30% ethanol solution C2H2OH
Answers
To determine the molal concentration of a solution, we need to know the amount of solute (ethanol) in moles and the mass of the solvent (usually water) in kilograms.
Given that the solution is 30% ethanol, it means that there are 30 grams of ethanol in 100 grams of the solution. Let's assume we have 100 grams of the solution.
To find the amount of ethanol in moles, we need to convert grams to moles using the molar mass of ethanol (C2H5OH).
The molar mass of C2H5OH:
2 * atomic mass of carbon (C) = 2 * 12.01 g/mol = 24.02 g/mol
6 * atomic mass of hydrogen (H) = 6 * 1.01 g/mol = 6.06 g/mol
1 * atomic mass of oxygen (O) = 1 * 16.00 g/mol = 16.00 g/mol
1 * atomic mass of hydrogen (H) = 1 * 1.01 g/mol = 1.01 g/mol
Total molar mass of C2H5OH = 24.02 + 6.06 + 16.00 + 1.01 = 47.09 g/mol
Now, let's calculate the amount of ethanol in moles:
30 grams ethanol * (1 mol / 47.09 g) = 0.637 moles ethanol
Next, we need to determine the mass of the solvent (water) in kilograms. Let's assume we have 100 grams of the solution, so the mass of water would be 100 - 30 = 70 grams.
Converting the mass of water to kilograms:
70 grams * (1 kg / 1000 grams) = 0.07 kg
Finally, we can calculate the molal concentration (m) using the formula:
molal concentration (m) = moles of solute/mass of solvent in kilograms
m = 0.637 moles / 0.07 kg ≈ 9.10 mol/kg
Therefore, the molal concentration of the 30% ethanol solution (C2H5OH) is approximately 9.10 mol/kg.
For more details regarding molal concentration, visit:
https://brainly.com/question/11716136
#SPJ1
Determine the type of reaction, predict the product and balance the equation for the following:
LiOH + HBr --->
Answers
From the uncompleted equation, we have:
LiOH + HBr ->
LiOH is an ionic substance that can dissociate to produce Li⁺ and OH⁻ HBR is an ionic substance that can dissociate to produce H⁺ and Br⁻Since we have two ionic substance reacting, we can conclude that the type of reaction is double displacement reaction as the reaction will involve exchange of ions between the reacting species.
How do i determine the products of the reaction?The products of the reaction can be obtained by balancing the equation. This is shown below:
LiOH + HBr ->
By exchange of ion, we have
LiOH + HBr -> LiBr + H₂O
Now, observing the equation, we can see that the equation is balanced.
Thus, the products of the reaction are LiBr and H₂O
Learn more about balancing equation:
https://brainly.com/question/12192253
#SPJ1
For this question choose three answered which question should be asked before writing the name for H2SO4 (aq) HURRY
Answers
The name for H2SO4(aq) is Sulfuric acid.
Sulfuric acid (H2SO4) is a highly corrosive and strong acid. It is one of the most important industrial chemicals produced worldwide. Sulfuric acid is commonly used in various industries for a wide range of applications. It is used in the production of fertilizers, detergents, dyes, pharmaceuticals, and various chemical processes.
Sulfuric acid is also utilized in laboratories for its acidic properties and as a dehydrating agent due to its strong affinity for water. It is a dense, oily liquid that is colorless when pure but can appear yellowish or brownish due to impurities. When handling sulfuric acid, caution must be exercised as it can cause severe burns and is harmful if ingested or inhaled.
Learn more about Sulfuric acid on:
https://brainly.com/question/1107054
#SPJ1
Look at the graph that shows the progress made in reducing fuel cell system costs. Graph of progress in reducing Fuel Cell System has an x axis labeled Years from 2002 to 2010, and a y axis labeled cost in dollars per kilowatt hour from 0 to 300. Data is: 2002, 248 dollars. 2003, 198 dollars. 2004, 149 dollars. 2005, 99 dollars. 2007, 82 dollars. 2008, 60 dollars. 2009, 51 dollars. 2010, 43 dollars. 2015 goal is 30 dollars per kilowatt hour. Which conclusion is supported by the information in the graph? The cost of producing a kilowatt of power with a fuel cell will be less than $30 in 2015. Fuel cell cars are unlikely to be affordable in the near future. The rate of emissions is decreasing because of inexpensive fuel cell technology. The environment is unlikely to improve as a result of cheap fuel cell technology.
Answers
The cost of producing a kilowatt of power with a fuel cell will be less than $30 in 2015.
Based on the data provided in the graph, the cost of fuel cell systems has been decreasing over the years. In 2010, the cost was $43 per kilowatt hour, and the graph does not show any data beyond that year. However, it is mentioned that the goal for 2015 is to reach a cost of $30 per kilowatt hour. Given the decreasing trend in the cost of fuel cell systems, it is reasonable to conclude that the cost will be less than $30 in 2015, supporting the mentioned conclusion.
convert 7.54 x 10^-8 m to nanometers
Answers
7.54 *[tex]10^8[/tex] meters is 75.4 nanometers.
To convert 7.54 * [tex]10^8[/tex] meters to nanometers, you can multiply the value by [tex]10^9[/tex]
as, [tex]10^9[/tex]nanometers = 1 meter.
7.54 * [tex]10^8[/tex] m * [tex]10^9[/tex] = 7.54 x [tex]10^1[/tex] nm
Therefore, 7.54 *[tex]10^8[/tex] meters is equal to 75.4 nanometers.
learn more about conversion:
https://brainly.com/question/13076223
To convert 7.54 x 10^-8 meters to nanometers, you multiply 7.54 x 10^-8 by 1 x 10^9 to get 75.4 nanometers.
Explanation:To convert meters to nanometers, you need to know that 1 meter is equivalent to 1 x 109 nanometers. Therefore, if you were to convert 7.54 x 10-8 m to nanometers, you would multiply 7.54 x 10-8 by 1 x 109.
Here's how you'd do it: 7.54 x 10-8 m * 1 x 109 nm/m = 75.4 nm. So, 7.54 x 10-8 meters is equivalent to 75.4 nanometers.
Learn more about Unit Conversion here:https://brainly.com/question/32030244
#SPJ2
Reaction: 2K2O+4MnO2+3O2(g) 4KMnO4 (aq)
If you start with 291(g) of MnO2, how many moles of NaOH will you start with? (The molar mass of MnO2 is 87 for every 1 mole)
Answers
The number of moles of [tex]MnO_2[/tex] required is 3.345 moles.
In the given reaction, the balanced equation shows that for every 4 moles of [tex]MnO_2[/tex], 4 moles of [tex]KMnO_4[/tex] are produced. Therefore, we can use the stoichiometry of the reaction to calculate the moles of [tex]MnO_2[/tex] and the moles of [tex]KMnO_4[/tex]
Given:
Mass of [tex]MnO_2[/tex] = 291 g
Molar mass of[tex]MnO_2[/tex] = 87 g/mol
To find the moles of [tex]MnO_2[/tex], we use the formula:
Moles = Mass / Molar mass
Moles of [tex]MnO_2[/tex] = 291 g / 87 g/mol = 3.345 mol
Now, since the stoichiometry of the reaction tells us that the ratio of [tex]MnO_2[/tex]to [tex]KMnO_4[/tex] is 4:4, we can conclude that 3.345 moles of [tex]MnO_2[/tex]will produce an equal number of moles of [tex]KMnO_4[/tex]
Therefore, the moles of [tex]KMnO_4[/tex] produced will also be 3.345 mol.
However, the question asks for the moles of NaOH, which is not directly related to the given reaction. We cannot determine the moles of NaOH based on the information provided.
To find the moles of NaOH, we would need additional information or another relevant equation that includes NaOH.
Know more about moles here:
https://brainly.com/question/29367909
#SPJ8
How many grams of AgNO3 are needed to prepare 750 ml of a 0.30 M solution?
Answers
We can use the following formula to determine how many grams of AgNO3 are needed to make a 0.30 M solution with a volume of 750 ml:
moles = volume (L) x concentration (M)
The volume provided must first be converted from milliliters to liters:
Volume = 750 ml ÷ 1000 ml/L = 0.75 L
Now we can find the molarity of AgNO3:
moles = 0.30 M × 0.75 L = 0.225 moles
To find the grams of AgNO3, we need to use the molar mass of AgNO3, which is calculated as follows:
Ag: 1 atom × 107.87 g/mol = 107.87 g/mol
N: 1 atom × 14.01 g/mol = 14.01 g/mol
O: 3 atoms × 16.00 g/mol = 48.00 g/mol
Total molar mass of AgNO3:
107.87 g/mol + 14.01 g/mol + 48.00 g/mol = 169.88 g/mol
Now, we can calculate the grams of AgNO3 needed:
grams = moles × molar mass
grams = 0.225 moles × 169.88 g/mol = 38.22 grams
Therefore, approximately 38.22 grams of AgNO3 are needed to prepare 750 ml of a 0.30 M solution.
Learn more about molar mass, here:
https://brainly.com/question/31545539
#SPJ1
Identify what kind of bonding takes place between sodium and chlorine? Explain this bonding. What is the name of the resulting compound? Explain what happens to the compound in water and why it acts this way.
Answers
The dissociation of sodium chloride in water allows it to act as an electrolyte, conducting electricity through the movement of ions.
The bonding between sodium and chlorine is classified as ionic bonding. In this type of bonding, electrons are transferred from one atom to another, resulting in the formation of ions. Sodium (Na) readily donates one electron from its outermost shell to achieve a stable electron configuration, while chlorine (Cl) accepts this electron to fill its outermost shell. As a result, sodium forms a positively charged ion (Na+), known as a cation, while chlorine forms a negatively charged ion (Cl-), known as an anion. The electrostatic attraction between these oppositely charged ions creates a strong bond between sodium and chlorine, forming sodium chloride (NaCl) as the resulting compound.
When sodium chloride is dissolved in water, the compound dissociates into separate sodium cations and chloride anions. Water molecules, which have a polar nature, surround the individual ions due to their attraction to opposite charges. This process is called hydration or solvation. The water molecules effectively separate the sodium and chloride ions, leading to the compound's dissolution. This is because water molecules have a higher affinity for the charged ions compared to the ionic bond holding the compound together.
For more such questions on chloride
https://brainly.com/question/28106660
#SPJ8
If a chemical reaction consumes reactants at a steady rate of 1.64 x 1021 molecules per second, how long will it take for the reaction to consume 6.02 x 1023 molecules of reactant? Express your answer in seconds using the correct number of significant figures. Do not enter your answer using scientific notation.
Answers
The amount of time it will take for the reaction to consume 6.02 x 10²³ molecules of reactant is 3.67 × 10² seconds.
How to calculate molecules?The amount of time it will take for a molecule to react can be calculated by dividing the number of molecules in the substance by the rate of time as follows;
Time taken = no of molecules ÷ no of molecules/seconds
According to this question, if a chemical reaction consumes reactants at a steady rate of 1.64 x 10²¹ molecules per second, the amount of time it will take for the reaction to consume 6.02 x 10²³ molecules of reactant is as follows!
Time = 6.02 x 10²³ molecules ÷ 1.64 x 10²¹ molecules per second
Time = 3.67 × 10² seconds
Learn more about molecules at: https://brainly.com/question/30465503
#SPJ1
someone help ASAP!!
What are possible components of ionic compounds? Check all that apply.
1: a metal and a nonmetal
2: 2 metals
3: a metal and a polyatomic anion
4: a polyatomic cation and a metal
What happens to ions during bonding to form an ionic compound?
Cations accept electrons and anions give away electrons.
Anions and cations share electrons.
Cations give away electrons and anions accept those electrons.
Answers
Answer:
Question 1:
1: a metal and a nonmetal
3: a metal and a polyatomic anion
4: a polyatomic cation and a metal
Question 2:
Cations give away electrons and anions accept those electrons
1 is correct
2 is incorrect
3 is correct
4 is correct
For the 2nd question :
Cations give away electrons and anions meaning the elections accepts them
So the correct answer is "Cations give away electrons and anions accept those electrons."
When you touch a hot plate, the transfer of heat from the plate to your hand is called ______.
Answers
Answer:
Thermal Conduction
Explanation:
When you touch a hot plate, the transfer of heat from the plate to your hand is called conduction.
I hope this helps! ;)
Determine the limiting reactant:
2BF3 (1) + 3Li2SO4 (aq) --> B₂(SO4)3 (aq) + 6LiF (aq) (balanced)
300 grams of BF3 react with 800 grams of Li₂SO4.
Answers
Answer:
The limiting reactant is BF3 because there is less of it than Li2SO4.
Explanation:
Human activities are responsible for almost all of the increase in greenhouse gases in the atmosphere over the last 150 years. If we review the pie chart, we can determine the source greenhouse gas emissions by percentages. But ultimately, there is one huge cause of these emissions: it is involved with every piece of this pie chart. What is this human activity?
Answers
The underlying foundation of all these emissions can be traced back to the burning of fossil fuels, making it the dominant and pervasive cause of human-induced greenhouse gas emissions.
The human activity that is intricately connected to every piece of the pie chart representing greenhouse gas emissions is the burning of fossil fuels. Fossil fuel combustion, including coal, oil, and natural gas, is the primary contributor to the rise in greenhouse gas concentrations over the past 150 years. When these fuels are burned for energy generation, transportation, industrial processes, and residential use, carbon dioxide (CO2) is released into the atmosphere. CO2 is the most significant greenhouse gas, accounting for approximately 75% of total emissions. The other greenhouse gases, such as methane (CH4) and nitrous oxide (N2O), are also released as byproducts of certain human activities, such as agriculture, deforestation, and waste management.
For more such questions on fuels
https://brainly.com/question/29429802
#SPJ8
PLEASEEEE HELP ME, WILL MARK BRAINLEST
A combustion reaction requires at least 240 j to proceed.
current data…
Energy level: 200 J
Temperature: 40 degrees Celsius
Concentration: 2.5 M
Increasing temperature by 20 degrees Celsius adds 50 j of energy to the current energy level.
Increasing concentration by 1.5 M adds 30 j to the current energy level.
1. At the current energy level, will the reaction proceed?
A: Yes
B: No
C: I don’t know
D: Maybe
2. If you only increase the temperature by an additional 20 degrees Celsius will the reaction proceed?
A: yes
B: no
C: i don’t know
D: maybe
3. if you only increase the concentration by an additional 1.5 m, will the reaction proceed.
A: yes
B: no
C: I don’t know
D: maybe
4. if you increase the temperature by an additional 20 degrees Celsius and increase the concentration by an additional 1.5 M, will the reaction proceed?
A: yes
B: no
C: I don’t know
D: maybe
Answers
Option B of 1 is correct, option B of 2 is correct, option B of 3 is correct, and option A of 4 is correct. 1. Since the current energy level (200 J) is less than the minimum energy required (240 J), the reaction will not proceed.
2. Increasing the temperature by 20 degrees Celsius adds 50 J of energy. However, even with this additional energy, the total energy level (200 J + 50 J = 250 J) is still less than the minimum energy required (240 J). Therefore, the reaction will not proceed.
3. Increasing the concentration by 1.5 M adds 30 J of energy. However, the energy level contribution from concentration is usually negligible compared to temperature. Therefore, even with this additional energy, the total energy level will still be less than the minimum energy required. The reaction will not proceed.
4. Increasing the temperature by 20 degrees Celsius adds 50 J of energy, and increasing the concentration by 1.5 M adds 30 J of energy. The total energy added is 50 J + 30 J = 80 J. The current energy level (200 J + 80 J = 280 J) is now higher than the minimum energy required (240 J). Therefore, with these additional changes, the reaction will proceed.
Learn more about energy levels, here:
https://brainly.com/question/30546209
#SPJ1
Select all of the equations which demonstrate the law of conservation of mass.
A Mg + S → MgS2
B C + O2 → C2O
C 4Cu + O2 → 2Cu2O
D 2H2 + O2 → 2H2O
E H2SO4 + Zn → 4ZnSO + H2
Answers
The equations (C + O2 → C2O), C (4Cu + O2 → 2Cu2O), and D (2H2 + O2 → 2H2O) demonstrate the law of conservation of mass. Option B.
The law of conservation of mass states that in a chemical reaction, the total mass of the reactants is equal to the total mass of the products. Let's analyze each equation to determine if it demonstrates the conservation of mass:
A Mg + S → MgS2:
This equation does not demonstrate the conservation of mass. The reactants contain one magnesium atom and one sulfur atom, while the product contains one magnesium atom and two sulfur atoms.
The number of atoms on the left side is not equal to the number of atoms on the right side, violating the law of conservation of mass.
B C + O2 → C2O:
This equation demonstrates the conservation of mass. The reactants contain one carbon atom and two oxygen atoms, while the product contains two carbon atoms and two oxygen atoms. The number of atoms on the left side is equal to the number of atoms on the right side, satisfying the law of conservation of mass.
C 4Cu + O2 → 2Cu2O:
This equation demonstrates the conservation of mass. The reactants contain four copper atoms and two oxygen atoms, while the product contains four copper atoms and two oxygen atoms.
The number of atoms on the left side is equal to the number of atoms on the right side, satisfying the law of conservation of mass.
D 2H2 + O2 → 2H2O:
This equation demonstrates the conservation of mass. The reactants contain four hydrogen atoms and two oxygen atoms, while the product contains four hydrogen atoms and two oxygen atoms. The number of atoms on the left side is equal to the number of atoms on the right side, satisfying the law of conservation of mass.
E H2SO4 + Zn → 4ZnSO + H2:
This equation does not demonstrate the conservation of mass. The reactants contain one sulfur atom, while the products contain four sulfur atoms.
The number of atoms on the left side is not equal to the number of atoms on the right side, violating the law of conservation of mass. So Option B is correct.
For more question on conservation visit:
https://brainly.com/question/27891057
#SPJ8
Predict the products in the chemical reaction, Na+AlN
Answers
In the Pilbara iron ore exists in mines that are both readily accessible and contain high grade ore, which is then shipped to China. Research how the iron is extracted by reduction of haematite. Explain why this process is known as reduction and how the ore is separated before being reduced in a blast furnace.
Answers
The extraction of iron from haematite ore involves a process called reduction. Reduction is the chemical reaction in which oxygen is removed from a compound, resulting in the formation of a new substance.
In the case of haematite, the reduction process involves removing the oxygen from the iron oxide (Fe2O3) to obtain elemental iron (Fe). This is typically achieved through a process called smelting, which is carried out in a blast furnace. Before the haematite ore is reduced in a blast furnace, it needs to undergo a series of steps to separate impurities and prepare it for the reduction process. The first step is crushing and grinding the ore into smaller particles. This is done to increase the surface area of the ore, allowing for better contact with the reducing agent. After crushing and grinding, the ore is then subjected to a process called beneficiation, where it is separated from gangue materials and other impurities.
Beneficiation techniques vary, but commonly involve processes such as gravity separation, magnetic separation, and flotation. These methods exploit the differences in physical and chemical properties between the haematite ore and the impurities, allowing for their separation. Once the ore is purified and separated, it is ready to be reduced in a blast furnace, where the smelting process takes place.
For more such questions on Reduction
https://brainly.com/question/13182308
#SPJ8
Water arrived on earth in the form of
Answers
Answer:
the water arrives on the earth in the form of water rich objects(planetesimals)
which stament is true about endothermic and exothermic reactions? 1. Energy is absorbed 2. energy is released in an endothermic reaction. 3. the products have more potential energy than the reactants in an exothermic reaction. 4. the products have more potential energy than the reactant in an endothermic reaction.
Answers
Answer:
Overall, energy is released in exothermic and absorbed in endothermic reactions. Therefore, "a" is the correct statement. The other statements are all incorrect.
Explanation:
u suck
Plants need light from the sun in order to go through photosynthesis. Which type of air pollution would most likely decrease the amount of sunlight a plant can absorb?
Answers
Answer:
Particulate matter pollution decreases the amount of sunlight plants can absorb for photosynthesis.
Explanation: