General Chemistry Gas Laws Worksheet

Assuming the ideal behavior of the gas, calculate the total pressure (in atm) of a mixture of 0.0260 mol of nitrogen, N2, and 0.0170 mol of argon, Ar, in a 3.50 liter vial at 20 oC. A sample of krypton comes out of a container in 95 seconds. The same amount of an unknown gas takes 55 seconds. Identify the unknown gas. How many litres of carbon dioxide at 23.0 oC and 732 mmHg could be absorbed by 284 g of lithium hydroxide? In a mixture of two gases, the partial pressure of CO2(g) is 0.145 atm and that of O2(g) is 0.370 atm. A gas-filled balloon with a volume of 3.50 l at 1.30 atm and 25.0 °C can rise 5 km above the earth`s surface, where the temperature and pressure are 12.0 °C and 1.10 atm respectively. How big would the ball be under these conditions? In a given reaction, at 25 °C, 16.4 l of carbon monoxide at 950.0 degrees are mixed with 11.2 g of iron(III) oxide and 5.68 g of iron are obtained. What is the percentage return of the reaction? Oxygen can be produced in the laboratory by decomposition of potassium chlorate, KClO3 according to the following reaction: What is the ratio of the effusion rates of hydrogen gas (H2) and carbon dioxide (CO2) at the same pressure and temperature? How many grams of CaH2 are needed to produce 76.8 l of H2 gas at a pressure of 0.750 atm and a temperature of 25 °C? Sodium azide is used in car airbags as a source of nitrogen gas to quickly inflate bags in the event of an impact. If the volume of the airbag is 7.95 l, what mass of NaN3 is needed to produce enough nitrogen to fill it at 23.0°C and 1.20 atm? If a sample of Br2 vapor can escape from an opening in a container heated in 46 s, how long does it take the same amount of He to flow under identical conditions? Lithium hydroxide (LiOH) is used in space shuttles to absorb carbon dioxide exhaled by astronauts according to the following equation: 3.56 ml of an unknown gas has been shown to flow through a hole in the same amount of time as 8.64 ml of argon under the same conditions. Determine the molecular weight of the unknown gas. The effusion rate of an unknown gas is 9.20 ml/min.

Under identical conditions, the effusion rate of pure nitrogen gas (N2) is 14.65 ml/min. Identify the unknown gas with Graham`s law. a) O2 b) C3H8 c) C4H10 d) NO2 e) Cl2 Here are the links to the topics covered in this practice sentence: What is the partial pressure of nitrogen in a mixture of N2, SO2 and CO2 that has a total pressure of 6.84 atm? The partial pressure of SO2 is 2.10 atm and the partial pressure of CO2 is 1.74 atm. Propane (C3H8) is used as fuel in gas barbecues. How many litres of oxygen taken from the STP are required for the complete combustion of 26.4 g of propane? How many liters of oxygen can be produced from 4.80 g of KClO3 when the reaction is carried out under standard conditions? Calcium hydride (CaH2) can be used with water as a desiccant and source of hydrogen due to its high reactivity. A sample of ethylene gas (C2H6) taken from a 36,4 ml container with a flask in free motion at 31,0 °C exerts a pressure of 745 mmHg. What is the volume of this gas at STP?.