The temperature of 3.5 mol of a monatomic ideal gas is 320 K. The internal energy...

Question

Question

The temperature of 3.5 mol of a monatomic ideal gas is 320 K. The internal energy of this gas is doubled by the addition of heat.

(a) How much heat is needed when it is added at constant volume?

(b) How much heat is needed when it is added at constant pressure?

Answer 1

Answer #1

a) 3.5*(3*8.3142/2)*320 = 13967.85 J

b) 3.5*(5*8.3142/2)*320 = 23279.76 J

Answer 2

Answer #2

a.) = 3.5 x 12.5 x (320 - 295)

= 1093.75 J

b.) = 3.5 x 20.8 x (320 - 295)

= 1820 J

Answer 3

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