Gases Evaluation (12.18.2020)

Question 1

____consist of small particles that move rapidly in straight paths, have no attractive forces, are very far apart, have very small volumes compared to the volume of the container they occupy, and have kinetic energies that increase with an increase in Kelvin temperature

Answer 1

Gases

Question 2

_____ is the pressure exerted by a column of air from the top of the atmosphere to the surface of the Earth and is about 1 atmosphere or a little less at sea level

Answer 2

the atmospheric pressure

Question 3

____ is the force exerted by a gas against the walls of the container

Answer 3

pressure

Question 4

___ is the space occupied by a gas

Answer 4

volume

Question 5

___ is the determining factor of the kinetic energy and rate of motion of gas particles

Answer 5

temperature - Kelvin is required in calculations

Question 6

_____ is the quantity of gas present in a container

Answer 6

amount (n) - moles is required in calculations

Question 7

___ is described as a force acting on a specific area

Answer 7

gas pressure

Question 8

pressure equals

Answer 8

force/area

Question 9

_____ millimeters of Hg (mmHg) is equivalent to 1 atm

Answer 9

760 mmHg

Question 10

_____ torr is equivalent to 1 atm

Answer 10

760 torr

Question 11

______ inches of Hg (in. Hg) is equivalent to 1 atm

Answer 11

29.9 in Hg

Question 12

___ pounds per square inch (lb/in^2) (psi) is equivalent to 1 atm

Answer 12

14.7 lb/in^2

Question 13

____ pascal (Pa) is equivalent to 1 atm

Answer 13

101.325 Pa

Question 14

____kilopascal (kPa) is equivalent to 1 atm

Answer 14

101.326 kPa

Question 15

Boyle’s law states that the…

Answer 15

pressure of a gas is inversely related to its volume when T and n are constant

Question 16

If pressure increases, then the volume ____

Answer 16

decreases (Boyle’s)

Question 17

Boyle’s law can be stated as…

Answer 17

P1V1 = P2V2

Question 18

Charles’s Law states that the…

Answer 18

Kelvin temperature of a gas is directly related to the volume (P and n are constant)

Question 19

When the temperature of a gas increases, its volume ____

Answer 19

increases (Charles’s)

Question 20

K =

Answer 20

degrees celsius + 273.15

Question 21

Charles’s Law is written as…

Answer 21

V1/T1 = V2/T2

Question 22

Gay-Lussac’s Law states that…

Answer 22

the pressure exerted by a gas is directly related to the Kelvin temperature (V and n are constant)

Question 23

Gay-Lussac’s Law can be written as…

Answer 23

P1/T1 = P2/T2

Question 24

Avogadro’s Law states that…

Answer 24

the volume of a gas is directly related to the number of moles of gas (T and P are constant)

Question 25

Avogadro’s Law can be written as…

Answer 25

V1/n1 = V2/n2

Question 26

The molar volume of a gas is measured at STP (standard pressure and temperature) and is ___ for exactly __ of a gas

Answer 26

22.4L; 1 mol

Question 27

the _____ of a gas is the pressure of each gas in a mixture and is the pressure that each gas would exert if it were by itself in the container

Answer 27

partial pressure

Question 28

Dalton’s Law states that the total pressure…

Answer 28

depends on the total number of gas particles, not the types of particles and is exerted by a gas mixture as the sum of the partial pressures of those gases

Question 29

Dalton’s Law is written as…

Answer 29

PT = P1 + P2 + P3 +…

Question 30

partial pressure equals

Answer 30

the number of moles of that component (RT/V) or for multicomponent, Pa = na(RT/V) + Pb = nb(RT/V) + Pc = Nc(RT/V)…