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P. 4459. A certain amount of ideal gas contains Helium atoms and Oxygen molecules. The mass of the mixture is 20 gram, its volume is 18.63 litres at a temperature of 27 oC and at a pressure of 200 kPa.

How many moles of Helium and how many moles of Oxygen are there in the gas?

(4 points)

Deadline expired on 10 October 2012.

Google Translation (Sorry, the solution is published in Hungarian only.)

Megoldásvázlat. 1 mol hélium és 0,5 mol oxigén.

Statistics on problem P. 4459.
 230 students sent a solution. 4 points: 158 students. 3 points: 11 students. 2 points: 26 students. 1 point: 23 students. 0 point: 8 students. Unfair, not evaluated: 4 solutions.

• Problems in Physics of KöMaL, September 2012

•  Támogatóink: Morgan Stanley