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Homework 2

1 .       For an ideal gas, calculate the pressure in atm if 8.25 x 10-2 mol occupies 174 mL at 215°C.

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2 .       Find the quantity of a gas in moles if 6.38 L at 358°C has a pressure of 955 torr.

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3 .       Find the volume of a gas in liters if 2.95 mol has a pressure of 0.760 atm at a temperature of 52°C.

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4 .       A chemical reaction is taking place in a sealed vessel of fixed volume. In the course of the reaction, the number of moles of gas present in the vessel increases. In an effort to maintain a constant pressure inside the vessel, the temperature

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5 .       An aerosol spray can with a volume of 325 mL contains 3.00 g of propane (C3H8) as propellant. What is the pressure in atm of the gas in the can at 28°C?

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6 .       A breath of air has a volume of 1.05 L at a pressure of 740. torr and body temperature, 37°C. Calculate the number of molecules in the breath.

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7 .       For an ideal gas, calculate the temperature in K if 1.82 x 10-3 mol occupies 2.88 mL at 22.1 atm.

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8 .       Find the volume of a gas if 10.2 mol at 1000°C has a pressure of 1298 torr.

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9 .       Find the number of moles of a gas that will have a pressure of 800. torr, a volume of 100. mL, and a temperature of 36.2°C.

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10 .       A particular 10.0-L container will explode if the internal pressure exceeds 50.0 atm. What is the largest mass of He that can be inserted into the container at 19.0°C?

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11 .       A mixture of gases has a total pressure of 0.109 atm, a volume of 1.00 L, and a temperature of 16.0°C. How many molecules are in the container?

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12 .       Sodium vapor is used in some street lamps. A typical lamp contains 2.00 g of sodium vapor at 31°C and 1.50 atm. What is the volume of the lamp?

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