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Samuels CHEM Gases
Test Description: Gases
Instructions: Answer all questions to get your test result.
1) What is the formula for pressure?
A
P = F/A
B
P = F x A
C
P = mF/A
D
P = V/F
2) What are the values for STP?
A
1 L, 1 atm, 273.15 K
B
22.4 L, 1 atm, 273.15 K
C
1 L, 1 atm, 298 K
D
22.4 L, 1 atm, 298 K
3) What device measures the pressure created by the collisions of gas molecules in Earth’s atmosphere?
A
calorimeter
B
thermometer
C
thermostat
D
barometer
4) Which of the following is not a major assumption of the Kinetic Theory of Matter?
A
gas molecules undergo non-elastic collisions resulting in energy loss
B
kinetic energy is directly related to temperature
C
gas molecules are in constant, rapid motion, moving in straight lines
D
gas molecules are very far apart and their volume is negligible compared to the whole gas
5) What is the formula for the ideal gas law?
A
PV = mVT
B
PV = nR/T
C
PV = nRT
D
PV = nRV
6) Which gas law represents pressure being held constant while volume and temperature change?
A
Gay-Lussac’s Law
B
Charles’s Law
C
Avogadro’s Law
D
Boyle’s Law
7) What is the process of mixing molecules of one substance through another by random molecular motion?
A
chemical reaction
B
diffusion
C
partial pressure
D
entropy
8) cWhich law states that if the volume of gases are kept at equal temperatures and pressures, the number of molecules will be the same?
A
Boyle’s Law
B
Charles’s Law
C
Avogadro’s Law
D
Amonton’s Law
9) 760 torr is equal to
A
2 atm
B
0.1 atm
C
3 atm
D
1 atm
10) This device is used to measure the pressure of gas samples
A
manometer
B
calorimeter
C
altimeter
D
thermometer
*select an answer for all questions
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