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Section 3: The Ideal Gas Law


1.	What is the name given to a gas whose particles do not take up space, do not have intermolecular attractive forces, and follow the gas laws under all conditions of temperature and pressure? Need a Hint?
		A)	noble gas
		B)	diatomic gas
		C)	ideal gas
		D)	real gas


2.	What will happen to a real gas when the temperature is lowered and the pressure is raised? Need a Hint?
		A)	The gas eventually condenses to become a liquid.
		B)	The gas does not change.
		C)	The gas expands.
		D)	The number of gas particles doubles.


3.	If the pressure exerted by a gas at 100°C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present? Need a Hint?
		A)	5.5 x 10^-3 mol
		B)	1.8 x 10² mol
		C)	1.0 mol
		D)	100 mol


4.	How many grams of ammonia (NH₃) are present in a sample that occupies 2.0 L at a pressure at 2.0 atm and 25°C? Need a Hint?
		A)	0.16 grams
		B)	2.7 grams
		C)	6.3 grams
		D)	0.36 grams


5.	Determine the Celsius temperature of 1.50 moles of ammonia contained in a 10.0-L vessel under a pressure of 2.0 atm. Need a Hint?
		A)	-111°C
		B)	162°C
		C)	-50°C
		D)	0.0°C


6.	What is the molar mass of a gas if 0.104 g of the gas occupies 48.7 mL at STP? Need a Hint?
		A)	28.2 g/mol
		B)	34.5 g/mol
		C)	40.0 g/mol
		D)	47.9 g/mol


7.	How many moles of an ideal gas are contained in 8.21 L at 73°C and 380 torr? Need a Hint?
		A)	0.25
		B)	1.5 x 10²³
		C)	0.14
		D)	7.5 x 10²³