Chem 20 Gases Review Quizizz

At constant temperature, as volume of a gas sample increases, pressure will _____________

• increase

• decrease

• not change

At constant pressure, as temperature of a gas sample increases, volume will __________________

• an increase

• a decrease

• no change

A helium balloon has an initial pressure and volume of 120 kPa and 5.00L at 20 ⁰C. The balloon is taken on an airplane and placed in the plane’s wheel compartment. If the balloon has a volume of 5.50 L and a pressure of 94.2 kPa while it is travelling in wheel compartment, what is the temperature of the wheel compartment?

• - 20 ⁰C

• - 17 ⁰C

• 17 ⁰C

• 20 ⁰C

Tags

NGSS.HS-PS3-4

Which statement best describes the Law of Combining Volumes?

• Equal volumes of gas at the same T and P have equal amounts of gas

• The volumes of gas involved in a reaction, when measured at the same T and P, will occur in simple, whole number ratios.

• It's a conversion ratio that can be used to convert between volume and amount of a gas at either STP or SATP conditions

• The total volume of a gas sample is equal to the individual volumes of the components that make up the gas sample

What would be the volume of 3.25 moles of butane gas under SATP conditions?

• 80.6 L

• 72.8 L

• 0.145 L

• 0.131 L

Convert -23 ⁰C into a temperature in Kelvin.

• 23 K

• 250 K

• 296 K

• 323 K

Magnesium reacts with hydrochloric acid to produce hydrogen gas. What mass of HCl(aq) is required to produce 2.00 mol of hydrogen gas?

• 146 g

• 99.2 g

• 72.9 g

• 49.6 g

Tags

NGSS.HS-PS1-7

What is Molar Volume?

• The amount of gas in a one litre sample at a given temperature and pressure

• The volume that one mole of gas occupies at a given temperature and pressure

• The volume that a gas occupies at all temperatures

• The volume that a gas occupies at all pressures

A sealed vessel contains 0.200 mol of oxygen gas, 0.100 mol of nitrogen gas, and 0.200 mol of argon gas. The total pressure of the gas mixture is 5.00 atm. The partial pressure of the argon is

• 0.200 atm

• 0.500 atm

• 1.00 atm

• 2.00 atm

1.00 mole of He was placed in each flask. Which statement is true?

• Since all flask have same amount of gas, flask 1 has the least pressure

• Since all flask have same amount of gas, flask 2 has the least pressure

• Since all flask have same amount of gas, flask 3 has the least pressure

• Since all flask have same amount of gas, flask 4 has the least pressure