Chem I Unit 11 Practice Exam

Pressure is....

• a force a gas exerts on its container

• a force caused by pressure

• a force caused by temperature

• a collision caused by air

If the pressure of a syringe changes from 8.4atm to 6.3atm, the volume must have gone....

• up

• down

• stayed the same

If a gas vessel is taken from a room at 298K to the outsider where it is 270K, what will its' pressure be if it was initially at 2.0atm?

• 1.8atm

• 1.81atm

• 2.21atm

• 2.2atm

If an empty bottle with a lid is placed in a fire (so the temperature is increased) the pressure will

• increase

• decrease

• stay the same

If you have 4.7mol of gas in your tire and you add 2.0mol of gas the tire pressure will change to....

• 46psi

• 75psi

• 14psi

• 22psi

The hulk smashes a sealed tanker car at 1.0atm, if the volume goes from 22,000L to 2,000L, what will the new pressure be?

• 11atm

• 10atm

• 0.09atm

• 0.091atm

The ideal gas law works best at..

I. High Temperatures

II. Low Temperatures

III. High Pressures

IV. Low Pressures

• I and III

• I and IV

• II and III

• II and IV

A certain gas at 50.oC occupies a 10.0L container with 3.1 mol of gas. What is the pressure in the container?

• 8.2 atm

• 1.3atm

• 1550atm

• 0.26atm

If the volume of a balloon is decreased by compressing it from 5.6L to 4.1L to maintain a constant pressure the temperature will change from 25^oC to...

• 220K

• 410K

• 34K

• 18K

Convert 450mmHg to atm

• 0.59atm

• 0.60atm

• 1.7atm

• 2atm