SOM/Pressure Review

SOM Transitions

100

What is it called when a solid turns to a gas?

Sublimation

200

Is energy added or removed during condensation?

Removed

300

What happens to liquid water at room temperature when you lower the pressure to zero?

Boiling/Evaporation

400

Water vapor at an low temperature (below -10 C) is in a box. Is the box high in pressure or low in pressure?

Low

500

Water is at the triple point before the pressure is increased at a steady temperature. What state of matter will the water exist in?

Liquid

Pressure

100

What is the atmospheric pressure in psi?

14.7

200

Are there more collisions between the particles and the sides of a container in a high or low pressure situation?

High pressure

300

A syringe is filled with 40 mL of air at atmospheric pressure. What will the volume inside be if the pressure is increased by 4x?

10 mL

400

An air tank is filled with 500 L of air at 40 psi. If you plan to fill 600 0.4L tires for your small remote control cars with this air, what pressure would each of the tires have? Bonus points to give the answer in mmHG (see Scott for answer)

83 psi

500

A swimming pool is build on the top of Mt. Everest. If you dive 10 ft into the Mt. Everest swimming pool, is the pressure higher, lower, or the same as when you dive 10 ft in a swimming pool in Montpelier, VT?

Lower

Mixed Questions

100

What is the pressure in a pure vacuum?

0 psi or none

200

Is the pressure higher on the bottom or top of an airplane wing during a flight?

bottom

300

One air chamber is 50 L with a pressure of 80 psi and a second air chamber is 70 L with a pressure of 70 psi. Which chamber is capable of filling up more balloons?What will the pressure inside 90 3L balloons be if filled up with this tank?

Tank 2 - 15.6 psi

400

A strong sealed metal box has air at a pressure of 10 psi inside before it is placed inside of a vacuum chamber. When the vacuum chamber is turned on, will the air on the inside of the box be pushing out or pulling in on the box?

Pushing out

500

A box has a large area of 30 square inches. How many pounds in the atmosphere putting on this box?

450 lbs