G9-Q4-Worksheet 2

How many balloons can be filled with 80 grams of argon gas, if each balloon has a volume of 2.24 liters at STP?

• a) 10 balloons
• b) 20 balloons
• c) 40 balloons
• d) 80 balloons

What is the molar mass of methane (CH₄)?

• a) 16 grams per mole
• b) 32 grams per mole
• c) 22.4 grams per mole
• d) 44 grams per mole

What is the new density of methane gas after its volume increases to 33.6 liters, starting with 16 grams at STP?

• a) 0.48 g/L
• b) 1.96 g/L
• c) 0.18 g/L
• d) 2.86 g/L

If 1 mole of gas occupies 22.4 liters at STP, what would be the volume of 2 moles of gas at STP?

• a) 22.4 liters
• b) 44.8 liters
• c) 11.2 liters
• d) 6.02 x 10²³ liters

What is the density of CO₂ in a container with a volume of 44.82 liters and a mass of 88 grams?

• a) 0.18 g/L
• b) 0.48 g/L
• c) 1.96 g/L
• d) 2.86 g/L

How do you calculate the number of moles in a substance when given the mass?

• a) Divide the mass by the molar mass
• b) Multiply the mass by 6.02 x 10²³
• c) Divide the volume by 22.4 liters
• d) Multiply the volume by the molar volume

What is the mass of 1 mole of oxygen gas (O₂)?

• a) 16 grams
• b) 32 grams
• c) 44 grams
• d) 22.4 grams

In a spacecraft carrying 32 grams of oxygen gas, if the gas occupies 11.2 liters, what is the density?

• a) 0.18 g/L
• b) 2.86 g/L
• c) 1.96 g/L
• d) 1.79 g/L

What is the volume of 1 mole of any ideal gas at STP?

• a) 16 liters
• b) 22.4 liters
• c) 44.8 liters
• d) 1 liter

If 16 grams of methane gas occupy 22.4 liters at STP, what is its density?

• a) 0.18 g/L
• b) 0.48 g/L
• c) 2.86 g/L
• d) 1.79 g/L