In the reaction 2C + O2(g) → 2CO(g), what is the volume ratio of O2 to CO? a. 1:1 b. 2:1 c. 1:2 d. 2:2

A 1.00 L sample of a gas has a mass of 1.92 g at STP. What is the molar mass of the gas? a. 1.92 g/mol b. 19.2 g/mol c. 22.4 g/mol d. 43.0 g/mol  

Suppose that two gases with unequal molar masses were injected into opposite ends of a long tube at the same time and allowed to diffuse toward the centre. They should begin to mix a. in approximately five minutes. b. closer to ...

a. Boyle’s law. b. Charles’s law. c. Kelvin’s law. d. Dalton’s law.

a. diffuses. b. is dense. c. is compressed. d. condenses.

a. identity of the gas. b. molar mass of the gas. c. condensation point of the gas. d. rate of diffusion of the gas.