Helppp me which one it is ??

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

Asample of freon gas has a volume of 2.23 liters, a pressure of 4.85 kpa, and a temperature of -1.36°c. calculate the volume at a pressure of 1.38 kpa and a temperature of 5.5°c. (show work)

The fact that the total amount of energy in a system remains constant is a(n)