Question

Use the molar volume to calculate each of the following at STP:

Calculate the number of moles of CO2 in 3.60 L of CO2 gas.

Calculate the volume, in liters, occupied by 0.600 mol of He gas.

Calculate the volume, in liters, occupied by 8.60 g of O2 gas.

Calculate the number of grams of Ne contained in 13.2 L of Ne gas.

Answer #1

molar volume is 22.4 L/mol

A)

number of mol = volume / molar volume

= 3.60 L / 22.4 L/mol

= 0.161 mol

Answer: 0.161 mol

B)

Volume = number of mol * molar volume

= 0.600 mol * 22.4 L/mol

= 13.4 L

Answer: 13.4 L

C)

Molar mass of O2 = 32 g/mol

mass(O2)= 8.60 g

use:

number of mol of O2,

n = mass of O2/molar mass of O2

=(8.60 g)/(32 g/mol)

= 0.26875 mol

Use:

volume = number of mol * molar volume

= 0.26875 mol * 22.4 L/mol

= 6.02 L

Answer: 6.02 L

D)

number of mol = volume / molar volume

= 13.2 L / 22.4 L/mol

= 0.589 mol

Molar mass of Ne = 20.18 g/mol

use:

mass of Ne,

m = number of mol * molar mass

= 0.589 mol * 20.18 g/mol

= 11.9 g

Answer: 11.9 g

use the molar voume to calculate each of the following at
STP
A) the number of moles CO2 in 4.00 L of CO1 gas
B) the volume, in liters, occupied by 0.420 mole of He Gas
C) the volume, in liters, occupied by 6.40 g of O2 gas
D) the number of grams of Ne contained in 11.2 L of Ne gas
Provide formulas and go step by step please

1. Use the molar volume to calculate each of the following at
STP:
A.Calculate the number of moles of CO2 in 1.40 L of CO2 gas.
Express your answer to three significant figures and include the
appropriate units.
B.Calculate the volume, in liters, occupied by 0.200 mol of He
gas.Express your answer to three significant figures and include
the appropriate units.
C.Calculate the volume, in liters, occupied by 4.00 g of O2
gas.Express your answer to three significant figures and...

Use molar volume to calculate each of the following at STP:
Part A
the volume, in liters, occupied by 2.60 moles of N2 gas
Part B
the number of moles of CO2 in 4.30 L of CO2 gas
_______
A 10.0 g sample of krypton has a temperature of 25∘C at 565 mmHg
.
Part C
What is the volume, in milliliters, of the krypton gas?
Express your answer to three significant figures and include the
appropriate units.

Using molar volume (stp) or the ideal gas law equation, determine
the molar mass , g/mole, of each of the fillowin g.
1- 12.5 g of a gas that has a volume of 2.25 L at stp M
=
2- 0.742 g of a gas that has a volume of 835 ml at 1.10 ATM
and 19 degrees C. M=

a balloon is filled with 25.7g of o2. the gas is at stp.
calculate the volume of the O2 gas in liters.

A gas mixture is made
by combining 7.4 g each of Ar, Ne, and an unknown diatomic gas. At
STP, the mixture occupies a volume of 18.28 L.
What is the molar mass
of the unknown gas? = g/mol

Calculate the volume of 68.0 g of NH3 gas at standard
temperature and pressure (STP). Use a molar mass with at least as
many significant figures as the data given.

Calculate the volume occupied by 84.0 g of nitrogen gas under
STP
conditions.

9. Use the following experimentally derived combustion
data to calculate the standard molar enthalpy of formation
(ΔH°f ) of liquid methanol (CH3OH) from its
elements.
2 CH3OH(l) + 3 O2(g) → 2
CO2(g) + 4 H2O(l)
ΔH°rxn = −1452.8 kJ
C(graphite) + O2(g) →
CO2(g)
ΔH°rxn = −393.5 kJ
2 H2(g) + O2(g) → 2
H2O(l)
ΔH°rxn = −571.6 kJ
(1) −238.7 kJ/mol (2) 487.7
kJ/mol (3) −548.3 kJ/mol
(4) 20.1 kJ/mol
(5) 47.1 kJ/mol

a gas mixture is made by combining the 6.8 g of each Ar, Ne, and
an unknown diatomic gas. At STP, the mixture occupies a volume of
16.80 L. What is the molar mass of the unknown gas? Identify the
unknown gas: H2, Cl2, N2, F2, or O2.

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