Ideal Gas Law Review

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

• 4.92 atm

• 0.200 atm

• 7.5 atm

• 0.0821 atm

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

• 17.22 L

• 0.0290 L

• 4.61 L

• 0.217 L

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?

• 215 moles

• 0.00466 mole

• 163,262 moles

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

• 243 K

• 0.890 ⁰C

• 3.21 ⁰F

• 243,605 K

Tags

NGSS.HS-PS3-1

What is an "ideal gas"?

• an hypothetical gas that obeys the ideal gas law perfectly

• any gas at STP

• a Noble Gas

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

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

• moles, kelvins, atmospheres, and liters

• moles, celsius, psi, and ounces

• moles, mass, temperature in ⁰F, and liters

• atmospheres, kPa, mm Hg, and inches Hg

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?

• volume in mL should be changed to L

• moles should be changed to mass

• temperature in K should be changed ₀C

• no unit adjustments need be made