Gases

Word Nerd

100

What is force/area and the SI unit to measure it?

Pressure, Pascal

200

What do we call the point where particles stop moving and what temperature is it?

Absolute 0. 0K

300

What does STP mean?

Standard Temperature and Pressure

400

What do we use to measure atmospheric pressure?

Barometer

500

What are the 5 standard pressures? (units and numbers!)

760 mmHg 29.9 inHg 14.7 psi 1 atm 101.325 kPa

Jazzercise

100

State the R value in kPa.

8.31

200

What is the point of the kinetic molecular theory?

To define an ideal gas

300

How many liters in one mole at STP? What do we call this value?

22.4 Molar Volume

400

What are the three ways to increase pressure in a sample of gas in a container?

Decrease volume,

Increase particles,

Increase temperature

500

What is the movment of average kinetic energy molecules called?

Temperature

The Law

100

Write the formula for Gay-Lussac's Law.

P1/T1=P2/T2

200

Which law states that if pressure, temperature, and volume are the same, the amount of particles of a gas will also be the same?

Avogadro's Law

300

What gas law does this represent: nothing is constant.

Combined Gas Law

400

Which law states that when pressure is constant, temperature and volume are directly proportional?

Charles

500

What gas law does this represent: A balloon expands when it is put on top of a mountain.

Boyles

Under Pressure

100

What is 137 C in K?

410 K

200

What is 500 kPa in atm?

4.93 atm

300

If you have 250 L of CO₂ at STP, what is the mass of the gas sample?

491.18 g

400

If you have 0.83 mol of a gas at .95 atm and 25 C, what is the volume of the gas?

21.38 L

500

Given the following reaction:

CH₄ + 2 O₂ --> 2 H₂O + CO₂

If you have 10 grams of water produced at STP, what volume of CH₄ did you have to start?

6.22 L

Maths

100

Solve: P1: 422 kPa
T1: 388 K
T2: 873.55 K
Wanted: P2 in kilopascals?

Correct answer is 950 kPa

200

Solve: P2: 106.74 kPa
V1: 35.2 L
V2: 2.58 L
Wanted: P1 in kilopascals?

Correct answer is 7.82 kPa

300

Solve: P1: 36.974 PSI
P2: 26.88 PSI
V2: 34.9 L
T1: 671.9 K
T2: 396.2 K
Wanted: V1 in liters

Correct answer is 43.0 L

400

Use the data to solve the popcorn lab:

Volume of kernels: 1.8 mL

Mass of water lost: 0.47 g

Temperature of oil: 225 C

Calculate the pressure of the kernels just before they popped in kPa.

59965.43 kPa

500

In a baby bottle lab, a student calculated that they would have 0.42 L of Hydrogen at STP. If the classroom conditions were actually 23 C and 15.1 psi, what would the theoretical volume of the gas actually be?

0.44 L