Chapter 3

Magnesium metal reacts with acid to produce hydrogen gas. The gas displaces water from a graduated cylinder, and the water level decreases from \(95.0 \mathrm{~mL}\) to \(32.5 \mathrm{~mL}\). What is the volume of gas produced by the reaction?

Calcium metal reacts with water to produce hydrogen gas. The gas displaces water from a graduated cylinder, and the water level decreases from \(75.5 \mathrm{~mL}\) to \(43.0 \mathrm{~mL}\). What is the volume of gas produced by the reaction?

Calculate the volume in milliliters for each of the following solids. (a) \(1.00 \mathrm{~kg}\) of silicon \(\left(d=2.33 \mathrm{~g} / \mathrm{cm}^{3}\right)\) (b) \(1.00 \mathrm{~kg}\) of titanium \(\left(d=4.51 \mathrm{~g} / \mathrm{cm}^{3}\right)\)

State whether the following will sink or float when dropped into water. (a) \(\operatorname{wax}\left(d=0.90 \mathrm{~g} / \mathrm{cm}^{3}\right)\) (b) marble \(\left(d=3.5 \mathrm{~g} / \mathrm{cm}^{3}\right)\)

State whether the following will sink or float when dropped into water. (a) redwood \((d=1.2 \mathrm{~g} / \mathrm{mL})\) (b) bamboo \((d=0.40 \mathrm{~g} / \mathrm{mL})\)

Will a balloon filled with the given gas rise in the air or drop to the ground? (Assume the mass of the balloon is negligible and the density of air is \(1.29 \mathrm{~g} / \mathrm{L} .)\) (a) helium \((d=0.178 \mathrm{~g} / \mathrm{L})\) (b) argon \((d=1.78 \mathrm{~g} / \mathrm{L})\)

Will a balloon filled with the given gas rise in the air or drop to the ground? (Assume the mass of the balloon is negligible and the density of air is \(1.29 \mathrm{~g} / \mathrm{L} .)\) (a) laughing gas \((d=1.96 \mathrm{~g} / \mathrm{L})\) (b) ammonia \((d=0.759 \mathrm{~g} / \mathrm{L})\)

State the density of water in grams per milliliter.

State the density of water in kilograms per liter.

Calculate the mass in grams for each of the following liquids. (a) \(250 \mathrm{~mL}\) of gasoline \((d=0.69 \mathrm{~g} / \mathrm{mL})\) (b) \(150 \mathrm{~mL}\) of ethanol \((d=0.79 \mathrm{~g} / \mathrm{mL})\)