22.48 g. mass of oxygen combines with 2.81 mol of magnesium in the reaction. For the reaction 2 Mg(s) + O2(g) → 2 MgO(s).
What do you mean by molar mass ?The term molar mass is defined as the mass of 1 mole of that particular substance and number of grams per mole of a compound.
In other words, the molar mass is the total mass in grams of all the atoms that make up a mole of a specific molecule. As a result, the molar mass units are grams/mole.
The balance chemical equation is as follows :
2 Mg(s) + O2(g) → 2 MgO(s)
The metal Mg reacts with Oxygen in a 2:1 ratio you would divide 2.81 by two.
Now, we get,
2.81 / 2 = 1.405
You would then multiply 1.405 by the molar mass of Oxygen which is 15.999
= 1.405 × 16
= 22.48 g.
Thus, 22.48 g. mass of oxygen combines with 2.81 mol of magnesium in the reaction.
To learn more about the molar mass, follow the link;
https://brainly.com/question/12127540
#SPJ2
How many Joules of heat are required to melt 250 grams of ice at 0°C?
AHfus = 334 J/g
AHvap = 2258 J/g
Cp= 4.184 J/g C
Heat required : Q = 83500 J = 83.5 kJ
Further explanationGiven
mass ice = 250 g at 0°C
Required
The heat required
Solution
The heat to change the phase can be formulated :
Q = m.Lf (melting/freezing)
Lf=latent heat of fusion
Input the value :
Q = 250 g x 334 J/g
Q = 83500 J
14) For the reaction P4(s) + 6 Hz(9) — 4 PH3(g)
a) f 15 g of Pe were used, how many liters of PHs were produced?
b) How many liters of H2 are required to completely react with 15 g of P4?
c) How many grams of PHs will be produced if 6.0 L of H2 are used?
Molar Mass of P4: 1 mol P4 =
g
a)
L PH3
b)
L H2
Molar Mass of PH3: 1 mol PH3 =
9
c)
g PH3
What happens at a constant temperature, as time progresses?
Answers -
1.Phase change
2.Bonding of particles
3.Separation of particles
4.The substance remains in its initial phase
The Independent Variable is:
Kinetic Energy
Height
Mass
Speed
N2 + 3H2 → 2NH3
How many moles of NH3 could you make with 4.2021 g of N2?
I need this like rn pls .
Moles of NH3 = 0.3 moles
Further explanationGivenN2 + 3H2 → 2NH3
4.2021 g of N2
Required
moles of NH3
Solution
mol N2 :
= 4.2021 g : 28 g/mol
= 0.15
From the equation, mol NH3 :
= 2/1 x mol N2
= 2/1 x 0.15
= 0.3 moles
What is the percent composition of the element hydrogen in the compound methane CH4
Answer:
The answer is 25.14 percent. Hope this helps.
What is the relationship of transported particle size to water velocity?
Answer:
The faster the water is flowing, the larger the particles that can be kept in suspension and transported within the flowing water.This is the relationship of transported particle size to water velocityExplanation:
#HopeItHelps
Highlight the examples of radiation in the passage
below.
A chemist working in the laboratory is
investigating the thermal energy of H2O in a
solid, liquid, and gas state. First, she places
ice in a pan on a burner and heats it. She
records the temperature at which the solid ice
melts. Next she takes the liquid water and
heats it in a microwave. The liquid begins to
bubble and evaporate into a gas. She records
the temperature at which the liquid water
turned into a gas.
Answer:
Heating of the liquid water in a microwave.
Explanation:
Radiation is a form of heat transfer process that does not require a material medium rather it travels through space or vacuum in the form of electromagnetic waves or radiation. Heat transfer by radiation occurs in the form of microwaves, infrared radiation, visible light, or another form of electromagnetic radiation is emitted or absorbed. Some common examples of heat transfer by radiation is the warming of the Earth by the Sun, the warmth one experiences while sitting by the campfire, or the heating up of foods in a microwave.
Black bodies or surfaces are good absorbers as well as emitters of radiation. On the other shiny or white surfaces are poor radiators of heat.
From the above discussion on radiation, it can be seen that when the chemist takes the liquid and heats it in a microwave, the heat absorbed by the liquid to change to gaseous state is transferred through radiation.
PLEASE ANSWER BY 9:00pm PT
“A person takes in a breath of 450.0 mL air at 756 mmHg and -10.0°C. Assuming that amount and pressure remains constant, what is the volume of air when it warm to body temp (37.0°C)? (Convert °C to Kelvins (+273))”
- my chem teachers question
The given answer is 58.9 mL
I didn’t know how to get to that conclusion
And I have to show my work
Answer:
thanks to all the mortal those who are born must die one day that it cut in cannot be avoided as ripe fruit fall of the tree so it is common to all the mortal those who are born must die one day that it cut
Explanation:
silghjnb bj i bb b nv bv hc U and lamenting produce a few of the tree so much for your time is common to both of us ☺️ to all the said that death of the tree so it cut in cannot be avoided as well as well but the mortal Kombat X the said
What is the name of this formula: Fe3Cl? PLEASE AND THANK YOU :(
Answer:
Ferric Chloride or Iron (III) Chloride
Explanation:
1. How much taller is the average person today than the average person 100 years ago?
A. 1 inch
B. 2 inches
C. 5 inches
D. 10 inches
Find the mass of 5.60 L O2 at 1.75 atm and 250.0 K
Answer:
Moles O2 = pV/RT = 2.75 x 5.60 / 0.08206 x 250=0.751
mass = 32 g/mol x 0.751 mol= 24.0 g
Explanation:
Hope it help
Mark me as brainliest
The mass of 5.60 Liter oxygen at 1.75 atm pressure and 250.0 K temperature is 24.0 gram.
What is ideal gas equation?
Ideal gas equation is a hypothesis which tells about the behavior of gas at standard condition and it is represented as:
PV = nRT, where
P = pressure = 1.75 atm
V = volume = 5.60 L
R = universal gas constant = 0.0821 L.atm /K.mol
T = temperature = 250 K
n is the moles of gas which will further define as:
n = W/M, where
W = required mass
M = molar mass
Now putting all the value in the above ideal gas equation and calculate for moles as:
n = (1.75)(5.60) / (0.0821)(250)
n = 0.751
Molar mass of oxygen is 32 g/mol and we calculate their required mass as:
W = 32 g/mol x 0.751 mol= 24.0 g
Hence, the required mass of oxygen is 24.0 g.
To know more about ideal gas equation, visit the below link:
https://brainly.com/question/25290815
How many grams of CO2 can be produced from 150 grams of O2?
C3H8 + 5 02
->
3 CO2 + 4H2O
120 g CO₂
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[RxN - Balanced] C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
[Given] 150 g O₂
Step 2: Identify Conversions
[RxN] 5 mol O₂ → 3 mol CO₂
[PT] Molar Mass of O - 16.00 g/mol
[PT] Molar Mass of C - 12.01 g/mol
Molar Mass of O₂ - 2(16.00) = 32.00 g/mol
Molar Mass of CO₂ - 12.01 + 2(16.00) = 44.01 g/mol
Step 3: Stoich
[DA] Set up: [tex]\displaystyle 150 \ g \ O_2(\frac{1 \ mol \ O_2}{32.00 \ g \ O_2})(\frac{3 \ mol \ CO_2}{5 \ mol \ O_2})(\frac{44.01 \ g \ CO_2}{1 \ mol \ CO_2})[/tex][DA] Multiply/Divide [Cancel out units]: [tex]\displaystyle 123.778 \ g \ CO_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 2 sig figs.
123.778 g CO₂ ≈ 120 g CO₂
4) What is the Formula weight of MgCl2 and the explanation.
95.21 g/mol
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableExplanation:Step 1: Identify
MgCl₂
Step 2: Find Formula Weight
[PT] Molar Mass of Mg - 24.31 g/mol
[PT] Molar Mass of Cl - 35.45 g/mol
Molar Mass of MgCl₂ - 24.31 + 2(35.45) = 95.21 g/mol
Cyanobacteria use the process of
to produce energy, and oxygen is given off as a waste product.
Answer:
Photosynthesis utilizes water as an electron donor in cyanobacteria in general and creates oxygen as a by-product, although some can even use hydrogen sulfide, a process that occurs among other photosynthetic bacteria, such as purple sulfur bacteria. Carbon dioxide is reduced via the Calvin cycle to form carbohydrates.
help me out please!?
Answer:
area a
Explanation:
is aluminum intensive or extensive
Answer:
Intensive
Explanation:
Aluminium is an Intensive Metal
#HopeItHelps
Cell organizations^ pls help
Answer:
Multicellular organisms have cells that are organized in specific ways to perform specialized functions. From the most complex level to the simplest level, the five levels of organization for the sheep should be ordered as:
whole organism → organ system → organ → tissue→ cell
Explanation:
If 10.0 L of nitrogen gas reacts with 16.0 L of hydrogen gas, how many liters of ammonia gas (NH3) will be
produced?
Volume of ammonia gas : 10.67 L
Further explanationGiven
10.0 L of nitrogen gas
16.0 L of hydrogen gas
Required
Volume of ammonia gas
Solution
Reaction
N₂ + 3H₂ ⇒ 2NH₃
From Avogadro's hypothesis, at the same temperature and pressure, the ratio of gas volume will be equal to the ratio of gas moles
Find limiting reactant :
N₂ : 10 : 1 = 10
H₂ : 16 : 3 = 5.3
H₂ as a limiting reactant
So volume of NH₃ based on H₂
= 2/3 x volume H₂
= 2/3 x 16 L
= 10.67 L
What is the mass of 3.5 mol of MgBr2?
Answer:
The answer is 0.0054314469917931.
Explanation:
I assume you are converting between moles MgBr2 and gram. You can view more details on each measurement unit: molecular weight of MgBr2 or grams This compound is also known as Magnesium Bromide.
The reaction between gallium bromide and sodium sulfite will yield ___ ?
Answer:
An equation for a chemical reaction in which the number of atoms for each element in the ... sulfide: 8 Fe + S8 ---> 8 FeS o _____ DECOMPOSITION _____: Definition - A single ... Hydrogen peroxide will produce water and oxygen gas if left in sunlight. (a) ... Sodium oxide reacts with carbon dioxide to form sodium carbonate.
sorry if wrong:(
Explanation:
How many orbitals are for p shapes
Answer:
3
Explanation:
From the table below we see that we can have three possible orbitals when l = 1. These are designated as p orbitals and have a sort of 8 shapes. Each of the p orbitals has a different orientation in three-dimensional space.
When sodium is placed in cold water does a reaction occur
WILL GIVE BRAINLIEST!!! MORE THAN ONE ANSWER!!
Which of these processes are chemical reactions?
boiling an egg
crushing spices
vegetables rotting
chopping vegetables
dew forming
Answer:
Boiling a egg
vegetables rotting
Hope this helps
Explanation:
A mole of Br2 and a mole of CH2Br2
Select one:
A. have a mass of 1g each
B. contain the same number of molecules
C. contain one molecule each
D. have the same mass
The term mole is defined as the amount of substance of a system which contains as many elementary entities. A mole of Br₂ and a mole of CH₂Br₂ have a mass of 1g each. Therefore, option A is correct.
What do you mean by mole ?The term mole is defined as the amount of substance of a system which contains as many elementary entities.
1 mole is equal to 6.023 × 10 ²³ molecules.
One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.
The mole concept can be used to convert between mass and number of particles.
A mole of Br₂ and a mole of CH₂Br₂ have a mass of 1g each. Because one mole of substance is equal to 6.023 × 10 ²³ molecules.
Thus, option A is correct.
To learn more about the mole, follow the link;
https://brainly.com/question/26416088
#SPJ5
If I have 5 mols of Neon how many grams of Neon do I have?
Answer:
20.1797 grams.
Explanation:
The molecular formula for Neon is Ne. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Neon, or 20.1797 grams.
If two kids kick the ball at the same time what is the motion on the ball will do?
Explanation:
I think your correct it's A!!
Using the balanced chemical equation:
4NH3 + 302 --> 2N2 + 6H20
Determine the amount of grams of N2 is produced If 4.03 moles of NH3 react?
Taking into account the reaction stoichiometry, 56.42 grams of N₂ are formed when 4 moles of NH₃ react.
Reaction stoichiometryIn first place, the balanced reaction is:
4 NH₃ + 3 O₂ → 2 N₂+ 6 H₂O
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:
NH₃: 4 molesO₂: 3 molesN₂: 2 molesH₂O: 6 molesThe molar mass of the compounds is:
NH₃: 17 g/moleO₂: 32 g/moleN₂: 28 g/moleH₂O: 18 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
NH₃: 4 moles ×17 g/mole= 68 gramsO₂: 3 moles ×32 g/mole= 96 gramsN₂: 2 moles ×28 g/mole= 56 gramsH₂O: 6 moles ×18 g/mole= 108 gramsMass of N₂ formedThe following rule of three can be applied: if by reaction stoichiometry 4 moles of NH₃ form 56 grams of N₂, 4.03 moles of NH₃ form how much mass of N₂?
[tex]mass of N_{2} =\frac{4.03 moles NH_{3} x56 grams of N_{2} }{4 moles NH_{3}}[/tex]
mass of N₂= 56.42 grams
Then, 56.42 grams of N₂ are formed when 4 moles of NH₃ react.
Learn more about the reaction stoichiometry:
brainly.com/question/24741074
brainly.com/question/24653699
#SPJ2
WILL GIBE BRAINLIEST!!!!!! Think research, and discuss: As you move across a period, you will recall that
the radius decreases. Why do you think a decrease in atomic radius would
result in a greater ionization energy?
(5 Points)
The effective nuclear charge is increasing due to less distance between protons and
neutrons.
O
The effective nuclear charge is increasing due to less distance between protons and
electrons.
The effective nuclear charge is decreasing due to less distance between protons
and neutrons.
The effective nuclear charge is decreasing due to less distance between protons
and electrons.
HELP! URGENTLY NEEDED! I NEED THIS ANSWER IN 5 MINUTES AND PERSON WHO HELPS GET THE ANSWER RIGHT GETS 25 POINTS!!! PLEASE I AM FAILING THIS CLASS AND NEED SO MUCH HELP!!!!
The coefficient/s will balance the chemical equation CH4 +O2 -------» CO2 + H2O is
a
1, 2, 1, 2
b
2, 1, 1, 2
c
2, 2, 1, 1
d
1, 1, 1, 2
Answer:
hey miss
Explanation:
The coefficients : a. 1,2,1,2
Further explanationGiven
Reaction(unbalanced)
CH4 +O2 -------» CO2 + H2O
Required
The blanced equation
Solution
Give a coefficient
CH4 +aO2 -------» bCO2 + cH2O
Make an equation
C, left=1, right=b⇒b=1
H, left=4, right = 2c⇒2c=4⇒c=2
O, left=2a, right=2b+c⇒2a=2b+c⇒2a=2.1+2⇒a=2
The equation becomes :
CH4 +2O2 -------» CO2 + 2H2O