Mathematical and Physical Journal
for High Schools
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Problem P. 4694. (January 2015)

P. 4694. \(\displaystyle a)\) What is the amount of water in grams in the air of a room of volume 60 m\(\displaystyle {}^3\) at a temperature of \(\displaystyle 25~{}^\circ\)C, if the relative humidity is 50%?

\(\displaystyle b)\) To what per cent value does the relative humidity of the room increase if by the next morning the temperature of the room have decreased to \(\displaystyle 20~{}^\circ\)C? (The windows are closed and well sealed.)

\(\displaystyle c)\) What is the relative humidity of the same sample of air at a temperature of \(\displaystyle 10~{}^\circ\)C?

(4 pont)

Deadline expired on February 10, 2015.


96 students sent a solution.
4 points:70 students.
3 points:11 students.
2 points:3 students.
1 point:4 students.
0 point:8 students.

Problems in Physics of KöMaL, January 2015