Mole to Volume

Which option shows the correct working steps to determine the number of moles in a 12 dm³ sample of Cl₂ gas at r.t.p?

• (12/35.5) moles

• (12/71) moles

• (12/24) moles

• (12 x 71) moles

At 100°C, the molar volume of gases is 30 dm³. Calculate the volume of 0.35 moles of steam produced from boiling water.

• 8.4 dm³

• 10.5 dm³

• 3.5 dm³

• 6.3 dm³

Carbon dioxide gas and water vapour have molar masses of 44 g/mol and 18 g/mol respectively. Which statement(s) about these gases is/are correct?

• At the same temperature and pressure, they occupy the same volume

• At the same temperature and pressure, they occupy different volumes

• Samples of equal volumes of each gas would contain different no.s of moles of each gas

• Samples of equal volumes of each gas would contain the same no.s of moles of each gas

Tags

NGSS.HS-PS1-7

Which conversion factor should be used to solve the following, "How many moles of argon atoms are present in 11.2 L of argon gas at STP?"

• 1 mol = 22.4 L 

• 1 mol = 39.95 g

• 1 mol = 6.02x10²³ atoms

• More than 1

Place the following values in the correct spot

a

b

c

d

1 mole

45.2 L

22.4 L

2.02 mole

How many moles of KI are present in 5 L of a 2 mol/L solution ?

• 5 mol

• 10 mol

• 2.5 mol

• 7 mol

What is the volume occupied by 2 moles of an ideal gas at STP?

• 22.4 L

• 44.8 L

• 11.2 L

• 33.6 L

If 0.5 moles of nitrogen gas occupy a volume of 11.2 L at STP, what is the volume occupied by 1 mole?

• 22.4 L

• 11.2 L

• 5.6 L

• 44.8 L

Which of the following is the correct molar volume of a gas at STP?

• 22.4 L/mol

• 24.0 L/mol

• 20.0 L/mol

• 18.0 L/mol

How many moles of oxygen gas are present in 44.8 L at STP?

• 1 mole

• 2 moles

• 0.5 moles

• 4 moles