Equations

Question 1

Defines Boyle’s Law

Answer 1

At a constant temperature the absolute pressure of a fixed mass of gas is inversely proportional to its volume

Question 2

What is the equation for Boyle’s law

Answer 2

P1V1 = P2V2

Question 3

Define Henry’s Law

Answer 3

The amount of gas dissolved in a liquid at a given temperature is directly proportional to the partial pressure of the gas

Question 4

What is the equation for Henry’s Law

Answer 4

C = k x P

C = solubility of a gas at a fixed temperature in a particular solvent (M or ml gas/L)

K = henrys law of constant (M/atm)

P = partial pressure of gas (atm)

Question 5

Define Dalton’s Law

Answer 5

Total pressure of a mixture of gas is equal to the sum of the partial pressures of all the gas components

Question 6

What is the equation for Dalton’s Law

Answer 6

PTotal = Pgas + all of them

Question 7

What are the partial pressures of O2 and N2 at sea level

Answer 7

N2 = 0.78ata

O2 = 0.209ata

Question 8

What are the partial pressures of O2 and N2 at 10 msw

Answer 8

(x2 as 2 atm)

N2 = 1.56atm
O2 = 0.418atm

Question 9

Breathing in air at 10msw is the equivalent of breathing in what % at sea level

Answer 9

42%

Question 10

Define Laplace’s law

Answer 10

The pressure within a cylinder or sphere is proportional to the surface tension divided by the radius

Question 11

What is Laplace’s law equation

Answer 11

Pressure = ST / R