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Ideal Gas Law Review

Total questions: 7

Worksheet time: 4mins

Name
Class
Date
1.

Using the ideal gas law, calculate the pressure if n = 4.0, L = 20.0 L, T = 300 K.

a)

4.92 atm

b)

0.200 atm

c)

7.5 atm

d)

0.0821 atm

2.

Using the ideal gas law, calculate the volume of 4.5 moles of nitrogen gas at 100 Celsius and 8.0 atm.

a)

17.22 L

b)

0.0290 L

c)

4.61 L

d)

0.217 L

3.

How many moles of helium gas would it take to fill up a Macey's Parade balloon if the temperature in New York City was 10.5 Celsius, the pressure was 760 mm Hg, and the volume is 5,000 L?

a)

215 moles

b)

0.00466 mole

c)

163,262 moles

4.

What is the temperature for a 2.5 x 10-2 moles of oxygen at 202.65 kPa with a volume of 250 mL?

a)

243 K

b)

0.890 0C

c)

3.21 0F

d)

243,605 K

5.

What is an "ideal gas"?

a)

an hypothetical gas that obeys the ideal gas law perfectly

b)

any gas at STP

c)

a Noble Gas

d)

any colorless, odorless gas that has a molar mass of 2.0

6.

What units are usually used when applying the Ideal Gas Law?

a)

moles, kelvins, atmospheres, and liters

b)

moles, celsius, psi, and ounces

c)

moles, mass, temperature in 0F, and liters

d)

atmospheres, kPa, mm Hg, and inches Hg

7.

A students wants to determine the pressure of a certain gas. He knows moles, temperature in K, the value of R in L-atm/mol-K, and volume in milliliters. Which unit, if any must be adjusted in order to use the ideal gas law?

a)

volume in mL should be changed to L

b)

moles should be changed to mass

c)

temperature in K should be changed 0C

d)

no unit adjustments need be made