Students to classrom heat transfer

[snabelpablo]

A student produces heat with a rate of 100W. How much heat is transferred from 90 students to a classroom in 50 minutes?

Attempt at solution:
100W (100 J/s) * 90 students * 3000 seconds = 2,7 * 10^7 J. Does this make sense?

The classroom is 3200 cubic meters and the air in it has a thermal capacity of 1020 J/kgK and a density of 1.20 kg/m3. If no heat escapes from the room and the ventilation is broken, how much does the air temperature increase during the 50 minutes?

Attempt at solution:
None. Some help, please?

 

[kuruman]

The number of Joules transferred is correct. Do you know of an expression that relates the change in temperature to the heat input?