Flashcards in Physics and Chemistry-Gas Laws Deck (32)

1

## how to remember the gas laws

###
Pink Can

Tight Be

Vagina Good

2

## How to remember the actual terms

###
Pressure (constant) Charles

Temp (constant) Boyles

volume (constant) Guy-lusac

3

## formula for boyels ideal gas law

### P1 x V1 = P2 x V2

4

## whose law states pressure is inversely proportional to volume at a constant temp

### Boyle's gas law

5

##
Boyle's Gas Law:

if a pressurized cylinder is opened and slowly emptied so that temp does not change, the volume of gas released from the cylinder can be estimated

### basically the law explains why a large volume of gas is released from a pressurized cylinder

6

##
Boyle's Gas Law: question

an E cylinder has a full pressure of 1900psi. we know that a full E cylinder will expand to approx 660L. what is the volume in the E cylinder?

###
P1 x V1 = P2 x V2

1900psi x (X) = 14.7psi x 660L

X= (14.7psi x 660L) / 1900psi = 5.1L

7

## who's law states volume is directly proportional to the absolute temp (K) at a constant pressure?

### Charles law

8

##
Charles' ideal gas Law:

states when temp increases, volume of gas does what?

### increases

9

##
Charles' ideal gas Law:

how do u calculate Kelvin (k)

###
273 + celcius = K

10

##
Charles' ideal gas Law:

what is the formula

### V1/T1 =V2/T2

11

##
Charles' ideal gas Law: question

a balloon is filled with air and has a pressure of 1 atm, and a temp of 0C, and a volume of 1 L. what is the volume of the balloon at 100C and a pressure of 1 Atm

###
V1/T1 = V2/T2

1L / 273K = X / 373K

(1L /273K) x 373k = X

X= 1.366 L

12

##
Charles' ideal gas Law: question

a bouncy ball has a temp of 50 C in the sun and a volume of 5L w/ a pressure of 760mmHg. if the pressure remains the same what is the volume at 0 C?

###
V1 / T1 = V2 / T2

5L / 323k = X / 273k

(5L / 323k) / 273 = X

X = 4.23L

13

## who's law states pressure is directly proportional to an absolute temp (k) if volume is constant?

### Guy-Lussac's

14

##
Guy-Lussac's Ideal gas Law:

states that when the temp increases in a container with a constant volume what happens to pressure

### increases

15

##
Guy-Lussac's Ideal gas Law:

whats is the formula

### P1 / T1 = P2 / T2

16

##
Guy-Lussac's Ideal gas Law: question

A E cylinder was left in the sun on the loading deck of a hospital. It has a temp of 60 C and a pressure of 2500psi. what will the pressure be in the cylinder at a temp of 15 C

###
P1 / T1 = P2 / T2

2500psi / 333k = X / 288k

(2500psi / 333k) x 288k = X

X = 2160psi

17

##
Ex of whos law?

squeezing an ambu bag raised the pressure and decreases the volume

### Boyle's

18

##
Ex of whos law?

the inflatable cuff of an LMA expands when placed into an autoclave

### Charles

19

##
Ex of whos law?

as the N20 cylinder empties the pressure of the tank decreases even N20 is present

### Guy-Lussac's

20

##
Ex of whos law?

During inspiration when breathing spontaneously, intrapulmonary falls and volume increases. during expiration, intrapulmonary pressure increase and volume decrease

### Boyle's

21

## who's law of partial pressures states: the total pressure in a mixture of gases is equal to the sum of the pressures of the individual gases (each gas is said to exert a partial pressure)

### Daltons law of partial pressures

22

##
Daltons law of partial pressures:

how do you calculate the partial pressure of a gas

### by multiplying the % gas (fractional concentration) times atmospheric pressure

23

##
Daltons law of partial pressures:

how is it applied to us

### it allows us to calculate the partial pressure of a gas if the % concentration is known

24

##
Daltons law of partial pressures:

it the atmosphere at sea level what are the partial pressures of O2 and N2

###
O2 21% so 0.21 x 760 = 160 mmHg

N2 79% so 0.79 x 760 = 600 mmHg

160 + 600 = 760 mmHG (which is atm pressure)

25

##
Daltons law of partial pressures: question

what are the partial pressures of N20 and O2 is they are delivered to a pt in a 70%/30% N2O/O2 mixture (assume sea level)

###
N20-> 0.70 x 760 = 532 mmHg

O2-> 0.30 x 760 = 228 mmHg

532 + 228 = 760mmHg

26

##
Daltons law of partial pressures: question

what is the partial pressure of O2 in the mountains where atm pressure is 550mmHg

###
O2 21%

0.21 x 550 = 116mmHg

27

##
Daltons law of partial pressures Question

what is the partial pressure of CO2 if its concentration in the ET gases is 5%

###
if they don;t specify always use sea level atm pressure

0.5 x 760 = 38 mmHg

28

## who number/ hypothesis described the relationship b/t the amount of gas and volume of gas

### Avogadro's number and hypothesis

29

##
Avogadro's number:

states the number of molecules in 1 mole of a substance is what?

### 6.022 x 10^23

30

##
Avogadro's hypothesis:

states that one mole of a gas at standard temp (O C) and a standard pressure (1 atm) (STP) occupies a volume of what?

### 22.4 L

31

##
Avogadro's hypothesis: problem

2 moles of gaseous N2O occupy what volume under standard conditions?

### 22.4L x 2= 44.8L

32