Mathematical and Physical Journal
for High Schools
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Problem P. 3785. (March 2005)

P. 3785. We cool down ideal gas of molar heat capacity of CV=20 J/(mol.K) at a constant pressure of 100 kPa. The initial volume of 1 m3 of the gas is halved in the course of cooling. How much heat is emitted by the gas during cooling? What kind of gas can it be?

(4 pont)

Deadline expired on April 11, 2005.


135 students sent a solution.
4 points:93 students.
3 points:5 students.
2 points:12 students.
1 point:13 students.
0 point:8 students.
Unfair, not evaluated:4 solutions.

Problems in Physics of KöMaL, March 2005