Mathematical and Physical Journal
for High Schools
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Problem M. 319. (December 2011)

M. 319. Make sodium cloride solutions in water of different mass concentration as 5%, 10%, and 15%. Cool down the solutions (for example in the freezer) and investigate at what temperature will the solutions begin to freeze.

(6 pont)

Deadline expired on January 10, 2012.


23 students sent a solution.
6 points:Juhász Péter, Kollarics Sándor, Papp Roland, Szabó 928 Attila, Szigeti Bertalan György.
5 points:Ercsey Tamás, Kovács 444 Áron, Olexó Gergely, Pálfi Nikolett, Szép András Jenő.
4 points:8 students.
3 points:1 student.
1 point:1 student.
0 point:2 students.
Unfair, not evaluated:1 solution.

Problems in Physics of KöMaL, December 2011