Science Homework Help

1) A 5.0 L sample of a gas at 25oC and 3.0 atm is compressed at constant temperature to a volume of 1.0 L. What is the new pressure?

2) A 2.5 L sample of gas at 25oC is heated to 50oC at constant pressure.

A) Will the volume double?

B) What would be the volume?

C) What temperature would be required to double the volume?

3) Calculate the temperature when a 0.50 L sample of gas at 1.0 atm and 25oC is compressed to 0.05 L of gas at 5.0 atm.

4) . What is the volume of gas occupied by 5.0 g CH4 at 25oC and 1 atm?

5) If you live in a very cold climate, you may have observed that, over a period of several days, snow and ice “disappear,” even though the temperature is continuously below the melting point of water. Explain the reason behind this phenomenon?