Chapter 5

Question 1

Pressure equation

Answer 1

P = force/area

Question 2

pressure at sea level is

Answer 2

usually 760 mmHg

Question 3

one atmosphere is defined as

Answer 3

760 mm Hg

Question 4

Boyle’s Law

Answer 4

as P increases, V decreases with constant T

Question 5

Charles’s Law

Answer 5

as T increases, V increases with constant P

aka: the hot air balloon law

Question 6

Gay-Lussac’s Law

Answer 6

as T increases, P increases with constant V

Question 7

Combined Gas Law

Answer 7

P1V1 P2V2
———– = ————-
T1 T2

Question 8

Avogadro’s Law

Answer 8

equal volumes of a gas at the same T and P contain equal numbers of molecules

Question 9

STP

Answer 9

standard temperature and pressure; pressure of 1atm and temp of 273K

Question 10

What volume of gas at STP contains 1 mole of molecules?

Answer 10

22.4 L

Question 11

Ideal gas law

Answer 11

PV = nRT

Question 12

partial pressure

Answer 12

the pressure exerted by a component of an ideal gaseous mixture

Question 13

dalton’s law of partial pressure

Answer 13

the total pressure of a gas mixture is the sum of the partial pressures of the components of the mixture

Question 14

low oxygen levels cause

Answer 14

hypoxia

Question 15

high oxygen levels cause

Answer 15

oxygen toxicity

Question 16

effusion

Answer 16

the process by which a gas escapes from a container into a vacuum through a small hole. rate of effusion is inversely proportional to the square root of the molar mass of the gas

Question 17

Graham’s Law

Answer 17

gas molecules with smaller masses diffuse (and effuse) faster than gas molecules with larger masses

Question 18

diffusion

Answer 18

the process by which molecules spread out in response to a concentration gradient