Need help with number 4. Please show full work, thanks! How much heat is require

Question

Need help with number 4.

Please show full work, thanks!

How much heat is required to raise the temperature of the air in a sealed room (a cube of constant 3.4 m on a side) from 15 degree C to 25 degree C? Assume that air is entirely N_2 (molecular weight 28) and that the air pressure starts at P_0=1.03*10^5 Pa. Heat= 351669.552 J Air isn't really pure nitrogen. It is approximately 78.5% N_2 and 21.5% O_2 (molecular weight 32) by volume. (Ignore the other gasses, mostly argon.) How much heat is required in this case? Heat= 351669.552 J What is the heat capacity of the air in the sealed room? C_v = 351669.552/10 J/K What is the pressure of the oxygen gas in the room after it has been heated to 25 degree C? Poxygen= Pa

Explanation / Answer

P(i)*((273+Tf)/(273+Ti)) *.215
(1.03 x e5)(298/288)*.215
22913.92361

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