b) if each mole of gas occupies 51 mL under the conditions of the explosion, how many liters of gas are produced?
Answer:
5.59L
Explanation:
If each mole of gas is 55 L, then this relationship can be used as a conversion factor to find the volume of gas produced
Please answer question 2, 100 points!
Answer:
the answer is attached
Explanation:
Which of the following generally applies to the noble gases?
a. high ionization energy, low electronegativity, high reactivity
b. low ionization energy, low electronegativity, low reactivity
c. high ionization energy, high electronegativity, high reactivity
d. high ionization energy, low electronegativity, low reactivity
What is the uncertainty in the position, Δx, of an electron moving near the nucleus at 6.00×106 m/s? Assume the relative uncertainty in the speed of the electron, Δv, is 1%; that is, 6.00×104 m/s. Report your answer in meters.
The uncertainty in the position, Δx, of an electron moving near the nucleus at 6.00×106 m/s is 7.24 x 10⁻¹⁰ m
What is relative uncertainty?Relative uncertainty is the measuring uncertainty fraction by the absolute value of the measured quantity value.
By Heisenberg uncertainty principle,
Δx x Δv = h/(4 xpi x m)
Putting the values in the formula
Δv = 8 x 10⁴ m/s
mass, m = 9.11 x 10⁻³¹ Kg
Putting values,
Δx x (8 x 10⁴) = (6.626 x 10⁻³⁴)/(4 x 3.14 x 9.11 x 10⁻³¹)
Δx x (8 x 10⁴) = 5.791 x 10⁻⁵
Δx = 7.239 x 10⁻¹⁰ m
Therefore, the uncertainty in the position is 7.24 x 10⁻¹⁰ m
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Would someone be able to explain why these answers here are correct? I don't quite understand them and needed some explanation. Thanks
Bromine have two isotopes they are Br-79 and Br-81. these are the two stable isotopes.
So here from the given data, element bromine consists of Br₂ molecules. here they have given three mass spectrum peaks.
Mass spectroscopy detects ions of slightly different masses. the bromine molecules consist of two isotopes that is ⁷⁹Br and ⁸¹Br or maybe more combination of theses.
So from the given masses and and spectra we know that the two isotopes of bromine are ⁷⁹Br and ⁸¹Br. That's why they are given like that in the answer.
Isotopes are those elements which have same number of protons but different number of neutrons.
Because of this in part A the answer is given as ⁷⁹Br, ⁷⁹Br and in part B it is given as ⁷⁹Br ,⁸¹Br. this is the common way of representing the mass number of an element.
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For the peptide Ala-Arg-Lys-Ala-Asn-Ser-Ala-Ser, what would be the expected charges at pH 1, 7, and 13?
The peptide Ala-Arg-Lys-Ala-Asn-Ser-Ala-Ser, the expected charges at pH 1, 7, and 13 is +3, +2, -1.
What are peptides?
Peptides can be defined as a single linear chain of many amino acids, held together by an amide bonds. It can also be defined as a naturally occurring short chain of amino acid monomer connected by an amide bonds.
The amino acid and other molecular are connected to one another in a sequence by a bond is called peptide bonds.
Peptides make bond and make certain proteins which are very essential for growth and development of human body.
In peptide Ala-Arg-Lys-Ala-Asn-Ser-Ala-Ser ionizing groups are present.
There are four ionizing groups are present
The amino groupThe Arginine R groupThe Lysine R group andThe carboxyl groupThus, the peptide Ala-Arg-Lys-Ala-Asn-Ser-Ala-Ser, the expected charges at pH 1, 7, and 13 is +3, +2, -1.
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g hfghhfhfhffhfhhfhffhhffhhfgfgf
this place is for serious matters only not jokes.
If you have a stock solution of 0.369 g/L NaCl, how would you make 200 mL of a 0.1 g/L NaCl solution?
Using the dilution formula, the volume of stock required is 54 mL and is made up to 200 mL to give 0.1 g/L NaCl solution.
What is the procedure for preparing dilute solutions from stock solutions?To prepare dilute solutions from stock solutions, the dilution formula is used to calculate the volume of stock solution required in order to prepare the dilute solution.
The dilution formula is given below:
M₁V₁ = M₂V₂
where;
M₁ is the concentration of the stock solutionV₁ is the volume of stock solution requiredM₂ is the concentration of the dilute solutionV₂ is the volume of the dilute solution requiredFrom the data provided:
M₁ = 0.369 g/L
V₁ = ?
M₂ = 0.1 g/L
V₂ = 200 mL
V₁ = M₂V₂/M₁
V₁= 200 * 0.1/0.369
V₁ = 54 mL
Therefore, 54 mL f the stock solution is measured into a volumetric flask and diluted with water to volume of 200 mL.
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Brainliest! +10pts
In this lab we first mixed some liver with hydrogen peroxide in test tube #1 and observed foaming letting it completely react. Then we poured off the remaining liquid into a second test tube #2. Next we added fresh liver to test tube #2 and no reaction (foaming) occurred because;
A)The liquid in test tube #2 was Oxygen.
B)The liquid in test tube #2 was water.
C)The liquid in test tube #2 was Hydrogen peroxide.
D)The liquid in test tube #2 was Catalase.
It's not going to react in test tube #2 because D) the liquid in test tube #2 was catalase.
What is catalase?Catalase is an enzyme that is an antioxidant and its function is the deamination of hydrogen peroxide into oxygen and water. This enzyme needs a heme group and manganese as a cofactor. So that's why tube #2 will not have a reaction (foaming) since it will contain catalase that catalyzes hydrogen peroxide.
Therefore, we can confirm that it's not going to react in test tube #2 because D) the liquid in test tube #2 was catalase.
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Q2.22
Homework Unanswered
What is the chemical symbol of the halogen located in the second period that naturally occurs as a diatomic gas?
Type your answer and submit
X, X Ω·
viia I
of light?
The chemical symbol of the halogen located in the second period that naturally occurs as a diatomic gas is F
A chemical symbol is a one or two letter designation of an element and some examples of chemical symbols of halogen are like Florine is F chlorine is Cl the first letter of a symbol is always capitalized and if the symbol contains two letters the second letter is lower case
The halogen elements are the six elements in Group 17 and second period of the periodic table group 17 occupies the second column from the right in the periodic table and contains fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and are all halogens and in that main halogen is fluorine and chemical symbol is F
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How many Al3+ ions are there in 0.500 g of Al2(SO4)3?
The number of particles of Al³⁺ present in the given compound is 1.76 x 10²¹ ions.
Mass of the aluminum ion
The mass of the aluminum ion in the given compound is calculated as follows;
Al₂(SO₄)₃ ⇄ 2Al³⁺ + 3SO₄²⁻
mass of Al₂(SO₄)₃ = 342.15 g
number of 0.5 g = 0.5/342.15 = 0.00146 mole
from the reaction equation above;
1 mole of Al₂(SO₄)₃ = 2 moles of Al³⁺
0.00146 mole = ?
= (0.00146 x 2)/1
= 0.00292 mole
1 moles of ion = 6.02 x 10²³ particles
0.00292 moles = ?
= 1.76 x 10²¹ ions
Thus, the number of particles of Al³⁺ present in the given compound is 1.76 x 10²¹ ions.
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You notice the water level in your fish bowl gets lower over time. What change in state is happening? How do you know?
Answer:
Evaporation
Explanation:
Overtime the water is slowly changing its physical state from liquid form to gaseous form in the form of evaporation.
A car's engine provides a forward force of 2000 N while the force of air resistance is 800 N in the opposite direction. With what
force will the car move, and in which direction? (1 point)
2800 N forward
O 16000 N forward
O 1200 N backward
O 1200 N forward
The car will move with a force of 1200 N forward
Data obtained from the questionThe following data were obtained from the question:
Forward force = 2000 NForce of air resistance = 800 NNet force =?How to determine the net force and the directionWe can obtain the force (i.e net force) the car will use to move as illustrated below:
Net force = forward force - force of air resistance
Net force = 2000 - 800
Net force = 1200 N forward
Thus, the car will move with a force of 1200 N forward
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Hello!
So...
The force of the car will be 12000 N forward.
Hope this helps! Also, if you need more help regarding this assignment, I made a really easy and helpful study guide for the rest of these, and even goes over a summary of the guidelines to properly answer question 11-15. So, if you need it, feel free to check it out. Thanks and good luck!
Quizlet - "Newton's Laws UT"
h t t p s : / / q u i z l e t . c o m / _ c 7 h q 1 o ? x = 1 q q t & i = 3 8 n a a s
If there are 6.10 moles of H, how many moles of each of the compounds are present?
If there are 6.10 moles of H, number moles of compounds H₂SO₄ is 3.05 moles, C₂H₄O₂ is 1.52 moles, and NaOH is 6.1 moles.
A mole is the unit to measure small entities as atoms, molecules, etc. It is equivalent to Avogadro's number which is equal to 6.022 x 10²³.
To calculate moles of each compound -
H₂SO₄ -
6.10 mol H x 1 mol H₂SO₄ = 3.05 mol
2 mol H
Hence, there are 3.05 moles of H₂SO₄.
C₂H₄O₂ -
6.10 mol H x 1 mol C₂H₄O₂ = 1.52 mol
4 mol H
Hence, there are 1.52 moles of C₂H₄O₂
NaOH-
6.10 mol H x 1 mol of NaOH = 6.1 mol
1 mol of H
Hence, there are 6.1 moles of NaOH.
Complete question is -
If there are 6.10 moles of H, how many moles of each of the compounds are present?
a) H₂SO₄
b) C₂H₄O₂
c) NaOH
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There are numerous starting points that a composer could use when writing a piece of music.
A. True
B. False, dynamics and tempo are the only starting points
C. False, composers never us a starting point
D. False, structure is the only starting point
There may be numerous starting points that a composer could use when writing a piece of music. A. True
The composer may additionally begin at a unique factor depending on the ideas they've at that moment in time. A music composer is someone who sings or performs a musical tool. In other phrases, it may be said that a singer or a guitarist is referred to as a musician for that count number. A composer however is a person who sets a track to a song.
Musical composition can discuss an original piece or work of the track, both vocal or instrumental, the structure of a musical piece, or the procedure of making or writing a new piece of music. people who create new compositions are referred to as composers.
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calculate the value at Kc for the hypothetical reaction
Kc for the hypothetical reaction is 1.5×10⁻⁵
Kc is the ratio of the equilibrium concentrations of products over the equilibrium concentrations of reactants each raised to the power of their stoichiometric coefficients.
Given reaction is
4M(g) ⇄ 2Z(g) Kc =6.58×10⁻³
2Z(g) ⇄ 4Q(g)+8X(g) Kc =2.07×10⁻²
So for finding another Kc of that given reaction is Q(g)+2X(g) ⇄ M(g)
To find Kc the formula is [M]m/[Q]q[X]x for Q=8.66
Put the given value 6.58×10⁻³/8.66×2.07×10⁻²
= 1.5×10⁻⁵
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what are the 8 physical properties of matter
Answer:
color ,hardness,maleabillit,sulubility,electrical,
b. On the periodic table, what three pieces of information are given about every element?
i._______
• Where is it written?
• What information does it give?
ii.______
• Where is it written?
• What information does it give?
iii._____
• Where is it written?
• What information does it give?
someone please help and fast !!
On the periodic table, three pieces of information are given about every element are the elemental symbol, the atomic number and the atomic weight
In the periodic table the chemical elements are arranged from left to right and top to bottom in order of increasing atomic number the horizontal rows on the periodic table are called periods and vertical column are called as group and they show atomic elements that have the same number of valence electrons the three main information are given about every element are the elemental symbol, the atomic number and the atomic weight atomic number means the number of protons in an atom's nucleus is referred to as the atomic number of that element, atomic symbol means the atomic symbol (or element symbol) is an abbreviation chosen to represent an element, atomic mass or atomic weight means the standard atomic weight of an element is the average mass of the element written in atomic mass units.
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Analyze two different crime scenes, such as a homicide and a burglary, and determine two forensic personnel that are likely to be involved in solving each crime. Describe at least two roles and responsibilities for the forensic personnel in each case.
Homicide is referred to as manslaughter and involves a human killing another while burglary is referred to as the breaking into or gaining access to a building without permission.
Who are the forensic personnel?They include the crime scene photographers and sample collector who are involved in the taking of photographs and collecting of body parts such as hair which can help reveal the identity of the suspect through the use of DNA extraction techniques.
The forensic technicians are also present at the crime scene and they help to make sketches of the crime scene and also assist in the gathering of the evidences which are left behind.
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Which of the following is an example of a covalent bond?
a. K-CI
b. AI-CI
c. H-CI
d. Al-Al
Answer:
al - al i think
Explanation:
Potassium chlorate decomposes when heated to produce potassium chloride and oxygen gas: 2 KClO3 (s) à 2 KCl (s) + 3 O2 (g) (a) If a test tube holding 87 g KClO3 is heated and the reaction goes to completion, calculate the volume of O2 gas that will be obtained if it is collected at a pressure of 1 atm and temperature of 27 °C. (Assume ideal gas behavior.)
Taking into account the reaction stoichiometry and the ideal gas law, the volume of O₂ obtained is 26.199 L.
Reaction stoichiometryIn first place, the balanced reaction is:
2 KClO₃ → 2 KCl + 3 O₂
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
KClO₃: 2 molesKCl: 2 molesO₂: 3 molesThe molar mass of the compounds is:
KClO₃: 122.55 g/moleKCl: 74.55 g/moleO₂: 32 g/moleBy reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
KClO₃: 2 moles ×122.55 g/mole= 245.1 gramsKCl: 2 moles ×74.55 g/mole= 149.1 gramsO₂: 3 moles ×32 g/mole= 96 gramsIdeal gas lawIdeal gases are a simplification of real gases that is done to study them more easily. It is considered to be formed by point particles, do not interact with each other and move randomly. It is also considered that the molecules of an ideal gas, in themselves, do not occupy any volume.
The pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:
P×V = n×R×T
where:
P is the gas pressure.V is the volume that occupies.T is its temperature.R is the ideal gas constant. The universal constant of ideal gases R has the same value for all gaseous substances.n is the number of moles of the gas.Mass of O₂ formedThe following rule of three can be applied: if by reaction stoichiometry 245.1 grams of KClO₃ form 3 moles of O₂, 87 grams of KClO₃ form how many moles of O₂?
moles of O₂= (87 grams of KClO₃× 3 moles of O₂)÷ 245.1 grams of KClO₃
moles of O₂= 1.065 moles
Volume of O₂ obtainedAssuming ideal gas behavior and knowing:
P= 1 atmn= 1.065 molesR= 0.082 [tex]\frac{atmL}{molK}[/tex]T= 27 C= 300 Kthe volume of O₂ obtained is calculated by the ideal gas law:
1 atm×V = 1.065 moles× 0.082 [tex]\frac{atmL}{molK}[/tex]× 300 K
Solving:
V= (1.065 moles× 0.082 [tex]\frac{atmL}{molK}[/tex]× 300 K)÷ 1 atm
V= 26.199 L
Finally, the volume of O₂ obtained is 26.199 L.
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How many Carbon atoms are there in a 132g sample of (NH4)2CO3
There are 131×10²¹ carbon atoms in 132 g sample of ammonium carbonate.
How to calculate number of atoms in a compound?
Number of atoms in a compound can be calculated as first finding the number of moles of the element in the compound and then multiplying it by the Avogadro's number to get the number of atoms.
In the question given , to calculate the number of carbon atoms in 132 g of ammonium carbonate,first the number of moles of carbon in ammonium carbonate are calculated as,
96.09 g ammonium carbonate has 12 g carbon ,therefore 132 g ammonium carbonate will have ,
132×12/96.09=16.48 g of carbon.
To find the number of moles of carbon in 132 g ammonium carbonate,mass of carbon is multiplied by mass of ammonium carbonate to get number of moles of carbon.
16.48 g of carbon÷132 g/moles of carbon
moles of carbon=16.48×132=2175.36 moles
The number of atoms are calculated by multiplying number of moles and Avogadro's number.
=2175.36×6.022×10²³
=131×10²¹
Thus, there are 132×10²¹ atoms of carbon in 132 g of ammonium carbonate.
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Heating 235 g of water from 22.6°C to 94.4°C in a microwave oven requires 7.06 × 10^4 J of energy. If the microwave frequency is 2.88 × 10^10 s−1, how many quanta are required to supply the 7.06 × 10^4 J?
3.699×10²⁷ quanta are required to supply 7.06×10⁴ J of energy.
How is quanta of energy calculated?Quanta of energy is calculated by using the Planck's equation which is given as,
E=hυ
where E= energy of radiation
h=Planck's constant
υ=frequency of radiation
Number of quanta can be calculated as.
=energy of radiation/energy required
As per the given data,temperature is not required in solving the problem
required energy =7.06×10⁴
microwave frequency=2.88×10¹⁰s[tex]^-1[/tex]
Energy of radiation is calculated by using Planck's equation,
=6.626×10[tex]^-34[/tex]×2.88×10¹⁰=19.082×10[tex]^-24[/tex] J.
Number of quanta required=7.06×10⁴/19.082×10[tex]^-24[/tex]=3.699×10²⁷
Hence, the number of quanta required is 3.699×10²⁷.
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How many moles (of molecules or formula units) are in each sample?58.32 g CF2Cl2
The number of moles in 58.32 grams of CF₂Cl₂ is 0.48 mole
How to determine the mole of CF₂Cl₂The mole of a substance is related to it's mass and molar mass according to the following equation:
Mole = mass / molar mass
With the above formula, we can determine the mole in 58.32 grams of CF₂Cl₂ as illustrated below:
Mass of CF₂Cl₂ = 58.32 gramsMolar mass of CF₂Cl₂ = 12 + (19 × 2) + (35.5 × 2) = 12 + 38 + 71 = 121 g/mol Mole of CF₂Cl₂ = ?Mole = mass / molar mass
Mole of CF₂Cl₂ = 58.32 / 121
Mole of CF₂Cl₂ = 0.48 mole
Thus, we can conclude that 0.48 mole is present in 58.32 grams of CF₂Cl₂
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5 μl (microliter) = _____ l (liter)
Music is often used to accompany pictures. What type of music would most likely accompany a photo of a fox chasing a rabbit?
A. Slow, Legato, Major Key
B. Upbeat, Fast, Staccato
C. Slow with Fermatas
D. Long and Flowing phrases
Answer:
B. Upbeat, Fast, Staccato
Explanation:
As with any chase between predator and prey, it's going to be fast-paced as both are literally running for their lives.
How many significant figures are there in 10082 kilometers?
The total number of Significant digits are 5.
We have a measurement of distance - 10082 Kilometers.
We have to determine the total number of significant digits in this measurement.
What are significant digits ?Significant figures are the digits of a number that are meaningful in terms of accuracy or precision.
According to the question -
Distance = 10082 Km
In this measurement, the total number of significant digits are 5 since all the 5 digits are important for a accurate measurements.
Hence, the total number of Significant digits are 5.
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If the amount of H2 is doubled, how many moles of H2O would have formed?
10H2+7O2=10H2O+2O2
If the amount of hydrogen gas (H₂) is doubled, the number of moles of water (H₂O) that will be formed is 20.
What is the principle of combining ratio of atoms?
This principle states that atoms cannot be created or destroyed.
However, atoms of different elements may combine with each other in a fixed, simple, whole number ratios to form compound atoms.
Atoms of same element can combine in more than one ratio to form two or more compounds.
The given chemical equation;
10H₂ + 7O₂ → 10H₂O + 2O₂
In the equation above, we can infer the following;
10 moles of hydrogen gas (H₂) gave 10 moles of water (H₂O).
10 H₂ ----------------------> 10 H₂O
when the hydrogen gas (H₂) is doubled,
20 H₂ ----------------------> ? H₂O
= (20 x 10)/10
= 20 moles of water (H₂O)
Thus, if the amount of hydrogen gas (H₂) is doubled, the number of moles of water (H₂O) that will be formed is 20.
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(a)
As you respond to Part A, Part B, and Part C, follow the directions below.
Address all of the instructions in each prompt.
Use evidence from the information provided and your own knowledge of science to support your responses.
Part A
Describe one way scientists near Lake Tahoe can detect if the lake has been impacted by zebra mussels.
Since then, it has spread to other rivers, colonized them, clogged the water intake pipes, and competed with local species for food. Zebra mussels are the method for removing a lot of plankton from the water column.
The Caspian Sea in Asia is where zebra mussels, or Driessen polymorpha, are found naturally. They arrived in the Great Lakes region in the late 1980s via ballast water from a transatlantic ship. The Great Lakes, Mississippi, Tennessee, Hudson, and Ohio river basins were all overrun by these mussels within ten years. The lake's brilliant blue hue is a result of Tahoe's clean air and water. There is more to this phenomenon than just the fact that Lake Tahoe's surface reflects the sky, which contributes to its blue color.
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If a soccer ball's mass is 5 kg and a player who weighs 50 kg kicks the soccer ball forward with a force of 5 N, how much
force does the ball exert on the player's foot and in what direction? (1 point)
O 10 kg/N backward
O 100 kg forward
O 5 N backward
O 5 N forward
If a soccer ball's mass is 5 kg and a player who weighs 50 kg kicks the soccer ball forward with a force of 5 N , 5 N force does the ball exert on the player's foot and in backward direction .
The four forces are gravity, normal force , friction force, and applied force. When the ball is kicked or kicked by player , when a player leaps into the air to avoid a tackle or grab the ball, and when a player leaps into the air to catch the ball , Force of Gravity is continuously at work in football .
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Answer:
Explanation:
1.) A car’s engine provides a forward force of 2000 N while the force of air resistance is 800 N in the opposite direction. With what force will the car move, and in which direction?
ANSWER: 1200 N forward
2.) Two movers are attempting to push a couch up a ramp. One mover applies a force of 80 N to the right, but the force of friction between the couch and the ramp is providing a force of 110 N in the opposite direction, and the couch slides down the ramp. At minimum, how much force will the second mover need to apply to help push the couch up the ramp?
ANSWER: 31 N
3.) A group of students conduct an experiment to study Newton’s second law of motion. They applied a force to a toy car and measure its acceleration. The table shows the results.
Force (N) Acceleration (m/s²)
2.0 5.0
3.0 7.5
6.0 15.0If the students graph the data points, which conclusion will they be able to make?
ANSWER: The data points will fall along a line. This shows that as the force increases, the acceleration increases.
4.) In the experimental setup shown, a car has one end of a string attached to it, and the other end is attached to a fixed number of metal discs. The car moves along the table and two probes sense the motion of the car. The probes send information to a computer that displays the acceleration and velocity of the experiment. When looking at these results, which quantity stays constant during the trials?
ANSWER: mass
5.) Imagine a scenario in which an animal's force is pushing itself forward 5 N, friction is pushing it 4 N backward, gravity is pushing the animal 10 N down, and the animal is pushing itself 10 N up. Describe the movement of the animal.
ANSWER: It only moves forward because there is a net force forward.
6.) Two rockets with the same mass are accelerated. Rocket A accelerates twice as quickly as rocket B. Which statement is correct?
ANSWER: The motor in rocket A is twice as powerful as the motor in rocket B.
7.) A model rocket has a mass of 0.2 kg, with a motor that can provide a force of 100 N. A second model rocket is being built with the same motor, but it is being designed to accelerate half as much as the first rocket. What kind of change can be made in the design to achieve this objective?
ANSWER: The mass of the second rocket should be 0.4 kg.
8.) Five motorboats are being tested to see which reaches the highest velocity in the same amount of time. After graphing the acceleration versus force for each motorboat, the graph is a sloped line with a y-intercept of zero. Which statement is correct about these motorboats?
ANSWER: All five motorboats have the same mass, which can be calculated from the graph.
9.) If a soccer ball’s mass is 5 kg and a player who weighs 50 kg kicks the soccer ball forward with a force of 5 N , how much force does the ball exert on the player’s foot and in what direction?
ANSWER: 5 N backward
10.)
A toy helicopter flies forward with a force of 15 N into an oncoming wind of 10 N. The force of gravity pulls the helicopter down with a force of 5 N, but the propeller is providing an upward force of 10 N. Which of the following accurately describes the helicopter’s force?
ANSWER: The toy helicopter is flying forward with a force of 5 N and upward with a force of 5 N.
11-15 are short answer questions but I hope this helps whoever needs it <3