Vocabulary
State of matter that has no definite volume or shape
Gas
A sample of oxygen gas collected in the lab occupies a volume of 250. mL when its pressure is 720. mmHg. What volume will the gas occupy at a pressure of 760. mmHg if the temperature is held constant?
237 mL
Pressure is measured in what units (typically)
atm
1 atm is equal to how many torr?
760 atm
Number of collisions of the molecules with their container
Pressure
What volume would 0.67 mol of NO2 gas occupy at 3.12 atm and 18.0oC?
5.13 L
What is the gas constant that will typically be used?
0.08206
As pressure increases, what happens to volume if temperature is held constant?
Pressure decreases
As one increases, another decreases is what kind of relationship?
Inverse or indirect relationship
A sample of hydrogen has an initial temperature of 50.oC. When the temperature is lowered to -5.0oC, the volume of hydrogen becomes 212cm3. What was the initial volume of hydrogen in cm3?
260 cm3
Temperature is measured in what units?
Kelvin
Convert 5.0 mol of NaCl to grams
290 grams
The amount of space that a gas occupies
Volume
A 8.3 L gas sample at standard pressure is compressed to a volume of 2.8 L and the temperature is increased from 30oC to 65oC. What is the new pressure of the gas in atms?
3.31 atm
A sample of argon gas at 273K and 1atm occupies 56.2L. Determine the number of moles of Argon.
2.51 mol Ar
A mixture of oxygen and chlorine contains oxygen at a pressure of 945 mmHg and chlorine at a pressure of 446 mmHg. What is the total pressure of the mixture?
1391 mmHg
The R stands for what in the ideal gas law
Ideal Gas Constant
What is the mass of chlorine gas (Cl2) in grams contained in a 15.0 L tank at 23oC and 3.78 atm of pressure?
165. grams
If four moles of a gas at a pressure of 5.4 atm have a volume of 12.0L, what is the temperature?
197 K
At what temperature (in oC) will 0.654 moles of neon gas occupy 12.30 liters at 1.95 atmospheres?
174oC