1. A 45.4 mLmL sample of gas in a cylinder is warmed from 19 CC to 92 CC.What is its volume at the final temperature? (Assume constant pressure.)

Express your answer in millililters to three significant figures.

2. A sample of gas has an initial volume of 12.7 LL at a pressure of 1.48 atmatm . If the sample is compressed to a volume of 10.1 LL , what is its pressure?

Express the pressure in atmospheres to three significant figures.

3. A balloon contains 0.131 molmol of gas and has a volume of 2.65 L If an additional 0.130 molmol of gas is added to the balloon (at the same temperature and pressure), what will its final volume be? Express your answer in liters to three significant figures.

4. What volume is occupied by 0.102 molmol of helium gas at a pressure of 0.99 atmatm and a temperature of 305 KK ? Express your answer using two significant figures.

5. A weather balloon is inflated to a volume of 26.1 LL at a pressure of 753 mmHgmmHg and a temperature of 30.9 CC. The balloon rises in the atmosphere to an altitude where the pressure is 390. mmHgmmHg and the temperature is -15.7 CC. Assuming the balloon can freely expand, calculate the volume of the balloon at this altitude.