Worksheet Avogadro+Boyle\'s Law PDF

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GAS LAW PRACTICE PROBLEMS

NAME_____________________

1.

State Avogadro’s Law:

2.

What variables must be held constant for Avogadro’s Law to be true?

3.

What would happen to: V if n is increased? n if V is increased? V if n is decreased? n if V is decreased?

4.

A sample of gas occupies 2.00 l with 5.00 moles present. What would happen to the volume if the number of moles is increased to 10.0?

5.

What happened to the number of moles in a sample that originally occupied 500 ml with 2.50 moles and then occupied 750 ml?

6.

A sample of N2 has 1.70 moles and occupies 3.80 l at 25.0˚C. A)

What volume will it occupy with 2.60 moles?

B)

How many moles are in a sample that occupies 1.45 l?

7. A balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa? (Assume that the temperature remains constant.)

8. A sample of neon gas occupies a volume of 677 mL at 134 kPa. What is the pressure of the sample if the volume is decreased to 642 mL? 9.A balloon inflated in a room at 24oC has a volume of 4.00 L. The balloon is then heated to a temperature of 58oC. What is the new volume if the pressure remains constant? 10. What is the temperature of a 2.3 L balloon if it shrinks to a volume of 0.632 L when it is dipped into liquid nitrogen at a temperature of 77 K? 11. Aerosol cans carry labels warning not to incinerate (burn) the cans or store them above a certain temperature. This problem will show why it is dangerous to dispose of aerosol cans in a fire. The gas in a used aerosol can is at a pressure of 103 kPa at 25oC. If the can is thrown onto a fire, what will the pressure be when the temperature reaches 928oC?

12. A pressure cooker containing kale and some water starts at 298 K and 101 kPa. The cooker is heated, and the pressure increases to 136 kPa. What is the final temperature inside the cooker?

13. The volume of a gas-filled balloon is 30.0 L at 313 K and 153 kPa pressure. What would the volume be at standard temperature and pressure (STP)? 14. At 22 ˚C a sample of gas occupies 2.35L of space and exerts 750mm Hg of pressure. What will the new volume in L be at STP?

2. Pressure and temperature. 3. Volume wd increase N Wd increase Volume wd decrease N wd decrease 4. 4.00L 5. 3.75mol 6 a. 5.81L b. 0.650 mol 7. 123.6L 8. 141.3kpa 9. 4.46L 10.280K 11. 415atm 12. 401K 13. 39.5L 14. 2.15L...