Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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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.


Statistics:

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