Question

Question:

Stephen has captured an unknown gas from space and is cooling it in a sealed container in the laboratory.

1) Does the graph represent an endothermic or exothermic process?

2) At what temperature will Stephen begin to observe droplets condensing on the sides of the container?

3) If Stephen started cooling the gas at 3:00pm, what time will it be when the substance has completely changed into a solid? (Assume the heat is being lost a constant rate.)

Answer 1

Answer:

1)heat is being lost,..means reaction is exothermic.

2) gas condensed into droplets at temperature 280-300k

3)