Question

For 0.37 moles of oxygen (02) gas at room temperature with active translational and rotational degrees of freedom.

1) how much heat must be added to in order to raise its temperature by 15 K with the pressure kept constant?

A. 100.4 J
B. 161.5 J
C. 69.2J
D. 19.4J
E. 935.3 J

Answer 1

B. 161.5 J

Step-by-step explanation:

`n` = Number of moles = 0.37

`\Delta T` = Rise in the temperature of the oxygen gas = 15 K

`Q` = heat added in order to raise the temperature

`c_(p)` = specific heat at constant pressure = 3.5

At constant pressure, heat is given as

`Q = n c_(p) R \Delta T\\Q = (3.5) (0.37) (8.314) (15)\\Q = 161.5 J`