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Flashcards in chem gas laws test Deck (22)
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1
Q

Why do you use the first and last data points and not consecutive data points when finding a value based on info from a chart

A

Error gets magnified when you use consecutive data points.

The margin of error is reduced with the greater range. The first and last points represent a complete set of data.

2
Q

What are the different values for pressure

A

1 atm= 14.7 psi= 760 torr= 760 mm Hg= 101300 Pa= 101.3 kPa

3
Q

What are the different values for pressure

A

1 ml= 1 c^3, 1000 ml= IL

4
Q

What must be true when using boyle’s law regarding moles and temp?
Is this a direct or indirect relationship

A

They must be constant

They are indirect

5
Q

What kind of relationship are charles and gay-lussac’s law

A

Direct

6
Q

What is the pressure at sea level?
What is absolute 0 pressure in kelvin
Psi=

A

1 atm
0 K
Pounds per square inch (tire pressure)

7
Q

Ideal gas law means ________…

A

Looking at a sample of gas at one point in time

8
Q

R=_________/_________

A

Ideal, universal gas constant (defines other units)

9
Q

Molar mass unit:

A

G/mol

10
Q

Dalton’s law of partial pressures applies to _____

A

Mixtures

11
Q

Total pressure of a gas mixture is equal to ___

A

The sum of individual gas pressures

12
Q

In WET GAS= DRY GAS + WATER VAPOR, the variables must describe that certain gas in ____

A

n=PV/RT

13
Q

The answer to a mole fraction is a decimal representing the ___ of the total number of ___________.

A

Percent, moles

14
Q

the movement of a substance from HIGH to LOW

A

Diffusion

15
Q

Movement of a substance from HIGH to LOW through a membrane (tiny openings)

A

Effusion

16
Q

In Graham’s law, make gas 1 the ____ gas

A

Lighter

17
Q

In Graham’s law, always remember that gases can be _______

A

Diatomic

18
Q

What is Henry’s law

A

The amount of gas that will dissolve in a liquid at a given temperature varies directly with the pressure above the liquid

19
Q

Why do divers take precautions with solubility of gasses and temperature

A

As the temperature increases, the solubility of a gas decreases
So, they avoid taking hot showers so no gaseous bubbles form in the bloodstream inside the body

20
Q

If a temperature increases by 15 Celsius, do you change the T or leave it C

A

Leave it

21
Q

If you are trying to find something at STP, what do you use for your second equations

A

The constant for each variable

273 K, 1 atm, etc

22
Q

Actual pressure=_________+_________

A

Gauge pressure, atmospheric pressure