Unit 2.6 Gas Laws Exam with Calculations Sasek 5th Hour

Unit 2.6 Gas Laws Reviews with Calculations

Multiple Choice

How many variables are changing between the initial and final?

• 1

• 2

• 3

• 4

Multiple Choice

You will solve this problem on your worksheet. But for now; what are the STANDARD CONDITIONS at STP in degrees Celsius

and mm Hg?

• 273 C and 100 mm Hg

• 0 C

  and

  760 mm Hg

• none of these

Poll

Which of the following is the best explanation for why the Kelvin scale is the best for measuring temperature? Choose all that apply

• Celsius and Fahrenheit scales don't measure motion

• Celsius and Fahrenheit measure heat not motion

• Since temperature is a measure of motion, only the Kelvin scale starts at zero motion of particles.

• At 0 °C and zero Fahrenheit, there is still motion of particles

Multiple Choice

To convert from degrees Celsius to Kelvin, you must first.....

• Add 273

• Subtract 273

Multiple Choice

Pictured here is a container of gas being compressed from the left to the right. What factor remains constant between the before and after?

• the pressure

• the volume

• the number of particles (n)

Multiple Choice

Pressure is a measure of....

• the amount of thermal energy in a system.

• the number of collisions between gas particles and the walls of the container

• the number of collisions between gas particles.

Multiple Choice

Which of the following is true regarding the pressure of the jar on the right compared with the left?

• As the volume of the container decreases the pressure increases.

• As the volume of the container decreases, the pressure remains the same

• As the volume of the container decreases, the pressure decreases too.

Multiple Choice

Which graph correctly illustrates the relationship between pressure of a system and volume?

Multiple Choice

Which graph shows an inverse relationship between variables? (As one increases, the other decreases?

Multiple Choice

A balloon with a volume of 25 L is heated from 35 C to 75 C. Which of the following is true about the change in volume as the balloon is heated?

• The volume of the balloon with decrease by a factor of 35/75

• The volume of the balloon will increase by a factor of 75/35

• The volume of the balloon will increase by a factor of 348K/308K

• The volume of a balloon with decrease by a factor of 308 K/ 348 K

Multiple Choice

A balloon filled with gas with a temperature of 25 C and pressure of 4.5 ATM is heated to 125 C and a volume of 27 L. What is the volume of the pressure changes to 1.5 ATM? Which chart is filled in properly below?

Multiple Choice

A balloon filled with gas with a pressure of 4.5 ATM and a volume of 25 L is decreased to 10L keeping number pf particles the same. Which the correct way to find the final pressure of the gas?

• multiply 25 L x the proportion 25/10

• multiply 25 L x the proportion 10/25

Multiple Choice

What does STP stand for?

• Sweet and Tasty

• Standard Temperature and Pressure