5.326x10^4 mol of C4H10(g) (butane gas) is generated into a 178.0 mL headspace, at 25.0 °C, thus increasing the pressure by 0.07208 atm. If we assume that the butane gas obeys Boyle's Law and Charle's Law, what would be the expected molar volume at STP? Answer in at least 4 sig figs.

Helium gas, He, at 22C and 1.00 atm occupied a vessel whose volume was 2.54 L. What volume would this gas occupy if it were cooled to liquid-nitrogen temperature (197C)?

A gas effuses 1.55 times faster than propane (C3H8) at the same temperature and pressure. (a) Is the gas heavier or lighter than propane? (b) What is the molar mass of the gas?

5-114 Carbon dioxide gas, saturated with water vapor, can be produced by the addition of aqueous acid to calcium carbonate based on the following balanced net ionic equation: (a) How many moles of wet CO (g), collected at 60.°C and 774 torr total pressure, are produced by the complete reaction of 10.0 g of CaCO3 with excess acid? (b) What volume does this wet CO2 occupy? (c) What volume would the CO2 occupy at 774 torr if a desiccant (a chemical drying agent) were added to remove the water? The vapor pressure of water at 60.°C is 149.4 mm Hg.