Chem - Unit 11 Gas Laws - Review

What is the Kelvin temperature for -27°C?

• -300 K

• 246 K

• 210 K

• 264 K

The temperature at 43 K expressed in degrees Celsius is?

• -230 ⁰C

• 264 ⁰C

• 230 ⁰C

• 316 ⁰C

A 450 mL sample of gas has a pressure of 3 atm. If the volume of the gas is decreased to 75 mL at constant temperature, the new pressure of the gas will be?

• 12 atm

• 20 atm

• 100 atm

• 18 atm

What is the volume of 9.00 moles of H2 gas at STP?

• 220 L

• 130 L

• 202 L

• 302 L

A 0.750 mole sample of a gas has a volume of 23.4 L at 324 K. What is the pressure of the gas in mmHg?

• 650 mmHg

• 600 mmHg

• 550 mmHg

• 648 mmHg

Standard temperature (273 K) and a pressure of 0.9 atm are equal to what in degrees Celsius and mmHg?

• 0^o and 684 mmHg

• 237 K and 684 mmHg

• 0^o and 760 mmHg

• 0^o and 0.9 mmHg

Which is the mass of O₂ gas if it has a volume of 22.4 L at STP?

• 1.00 mol

• 32 mol

• 32.00 g

• 1 g

A 5.00 g sample of neon at STP will occupy how much volume?

• 0.248 mol

• 9.23 L

• 6 L

• 5.56 L

The pressure on 350 mL of a gas at constant temperature is changed from 275 torr to 730 torr. The new volume of the gas is?

• 100 mL

• 130 mL

• 130 L

• 132 mL

A gas occupies a volume of 45 mL at 373 K. If the temperature is increased to 453 K while the pressure remains constant, what will be the volume of the gas?

• 95 mL

• 60 L

• 55.0 mL

• 55 mL