Mixed Gas Laws

How many moles of gas occupy 98 L at a pressure of 2.8 atmospheres and a temperature of 292 K?

• 11 moles of gas

• 1 moles of gas

• 22 moles of gas

• 30 moles of gas

A balloon is filled with 35.0 L of helium in the morning when the temperature is 20.0 ⁰C. By noon the temperature has risen to 45.0 ⁰C. What is the new volume of the balloon?

• 380 L

• 38.0 L

• 3.0 L

• 8.0 L

Tags

NGSS.HS-PS3-2

A 35 L tank of oxygen is at 315 K with an internal pressure of 190 atmospheres. How many moles of gas does the tank contain?

• 26 moles of gas

• 60 moles of gas

• 20 moles of gas

• 260 moles of gas

A balloon that can hold 85 L of air is inflated with 3.5 moles of gas at a pressure of 1.0 atmosphere. What is the temperature in Celcius (⁰C) of the balloon?

• 296 K = 230 C

• 212 K = -61 C

• 0 K = -273 C

• 296 K = 23 C

CaCO₃ decomposes at 1200 ⁰C to form CO₂ gas and CaO. If 25 L of CO₂ are collected at 1200 ⁰C, what will the volume of this gas be after it cools to 25 ⁰C?

• 51 L

• 5.1 L

• 1 L

• 700 L

Tags

NGSS.HS-PS3-4

A helium balloon with an internal pressure of 1.00 atm and a volume of 4.50 L at 20.0⁰ C is released. What volume will the balloon occupy at an altitude where the pressure is 0.600 atm and the temperature is –20.0 ⁰C?

• 648 L

• 68 L

• 6.48 L

• 48 L

There are 135 L of gas in a container at a temperature of 260 ⁰C. If the gas was cooled until the volume decreased to 75 L, what would the temperature of the gas be?

• 26 K

• 96 K

• 496 K

• 296 K

Tags

NGSS.HS-PS3-4

A 75 L container holds 62 moles of gas at a temperature of 215 ⁰C. What is the pressure in atmospheres inside the container?

• 33 atm

• 3 atm

• 330 atm

• 13 atm

A gas canister can tolerate internal pressures up to 210 atmospheres. If a 2.0 L canister holding 3.5 moles of gas is heated to 1350 ⁰C, will the canister explode?

• 230 atm. No, the canister will not explode.

• 230 atm. Yes, the canister will explode.

• 30 atm. No, the canister will not explode.

• 30 atm. Yes, the canister will explode.

Tags

NGSS.HS-PS3-4

An airtight container with a volume of 4.25 x 10⁴ L, an internal pressure of 1.00 atm, and an internal temperature of 15.0 ⁰C is washed off the deck of a ship and sinks to a depth where the pressure is 175 atm and the temperature is 3.00 ⁰C. What will the volume of the gas inside be when the container breaks under the pressure at this depth?

• 233 L

• 23 L

• 433 L

• 3 L