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. gases only. b. solids and liquids. c. liquids and gases. d. solids, liquids, and gases.

In the equation H2(g) + Cl2(g) → 2HCl(g), one volume of hydrogen yields how many volumes of hydrogen chloride? a. 1 b. 2 c. 3 d. 4

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

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 ...