Multiple ChoiceWhat is the volume, in liters, of 7.25 g of oxygen gas (O_2) at standard temperature and pressure (STP)?23views
Multiple ChoiceAt standard temperature and pressure (STP), which of the following samples occupies the greatest volume?20views
Multiple ChoiceWhat is the volume, in liters, of 11.6 g of ethane gas (C_2H_6) at STP? Round your answer to 3 significant figures.26views
Multiple ChoiceFor the complete combustion of 40.0 liters of hydrogen gas (H_2) at STP, what volume of oxygen gas (O_2) is required?24views
Multiple ChoiceA sample of gas has a volume of 32 L at 75°C. At what temperature (in °C) will the volume be equal to 16 L, assuming pressure and amount of gas remain constant?33views
Multiple ChoiceAt STP, how many liters of O_2 are required to produce 2 liters of H_2O(g) according to the reaction: 2H_2(g) + O_2(g) → 2H_2O(g)?23views
Multiple ChoiceWhen 8 grams of H_2 gas reacts completely with excess O_2 at standard temperature and pressure (STP), what volume of water vapor (H_2O) is produced?37views
Multiple ChoiceWhich of the following lists the approximate concentration (by volume) of CO_2, N_2, and O_2 in dry air?31views
Multiple ChoiceHow many grams of N_2 are required to produce 100.0 L of NH_3 at STP according to the reaction N_2 + 3H_2 → 2NH_3?41views