Multiple ChoiceWhich gas is more dense at standard temperature and pressure (STP), sulfur hexafluoride (SF_6) or helium (He), and what evidence supports your answer?
Multiple ChoiceWhat is the density of NH_3 gas at 435 K and 1.00 atm? (Use R = 0.0821 L·atm·mol^{-1}·K^{-1} and molar mass of NH_3 = 17.0 g/mol.)
Multiple ChoiceWhat is the density of NO_2 gas in a 4.50 L tank at 760.0 torr and 25.0 °C? (Express your answer in g/L.)
Multiple ChoiceWhat is the length of the side (in cm) of a cube that has a density of 12.6 g/ml and a mass of 7.65 g?
Multiple ChoiceA liquid in the lab has a density of 1.17 g/cm^3. Which of the following statements is true if you pour this liquid into a container of water (density = 1.00 g/cm^3)?