Gas Laws Review Quiz

A 0.5L container of nitrogen gas at 18 degrees Celsius is heated under constant pressure to the boiling point of water. What is its new volume?

• 0.5 L

• 0.86 L

• 0.64 L

• 0.79 L

At constant volume, a container of gas at atmospheric pressure is heated from 27 degrees Celsius to 77 degrees Celsius. What is the final pressure?

• 0.35 atm

• 1.2 atm

• 0.86 atm

• 2.8 atm

A sample of gas starts at 1.00 atm, 0.00 degrees Celsius, and 30.0 mL. What is the volume if the temperature increases to 27.0 degrees Celsius and the pressure increases to 2 atm?

• 65.9 mL

• 16.5 mL

• 13.7 mL

• 54.6 mL

If the pressure exerted by a gas at 100°C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?

• 1.0 mol

• 1.8 x 10² mol

• 100 mol

• 5.5 x 10-³ mol

Use the equation below to find the molar mass of a 98.2 g sample of gas that fills a 50.0 liter container at STP. M = mRT/PV

• 44.0 g/mol

• 1.48 g/mol

• 32.0 g/mol

• 4.00 g/mol

Use the equation below to find the density of a gas at STP with a molar mass of 44.0 g/mol. D=MP/RT

• 1.96 g/liter

• 23.9 g/liter

• 86.4 g/liter

• 0.0446 g/liter

A gaseous compound is 30.6% nitrogen and 69.4% oxygen by mass. A 5.25-g sample of the gas occupies a volume of 1.00 L and exerts a pressure of 1.26 atm at -4.0°C. What is the molecular formula for the gas?

• N₂O₄

• N₃0₆

• NO₂

• NO

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In the reaction shown, what mass of methane is required to produce 10.0 grams of water vapor? Methane gas + 2Oxygen gas yields Carbon dioxide gas + 2Water vapor

• 0.0445 grams

• 6.23 grams

• 22.5 grams

• 4.45 grams

Tags

NGSS.HS-PS1-7

What volume of oxygen gas is needed for the complete combustion of 40.0 liters of hydrogen gas? 2H₂(g) + O₂(g) yields 2H₂O(g)

• 20.0 L

• 80.0 L

• 2.00 L

• 40.0 L

Tags

NGSS.HS-PS1-7

Dry Ice is solid carbon dioxide. What volume of dry ice is produce at STP if 0.50 kg of dry ice becomes carbon dioxide gas?

CO₂ (s) yields CO₂ (g)

The molar mass of carbon dioxide is 44.009 g/mol. (convert kg to g)

• 250 L

• 2.0 L

• 0.25 L

• 0.51 L

Tags

NGSS.HS-PS1-7