Question

the internal energy of 1 mole of nitrogen at 300 k is about 625 j. its internal energy at 400 k will be about​

Answer 1

Answer:

Calculate the internal energy of one gram mole of nitrogen at 150^∘C assuming it to be an ideal gas.

625 ‎| Must include: 625

Answer 2

Answer:

Internal energy at 400k is U = 2703.5J

Explanation:

Nitrogen ($N_{2}$) is a diatomic gas.

C$_{v}$ for diatomic gas = n(2.5R)

n is the no. of moles.

Where R is the universal gas constant and is equal to 8.314 J⋅$K^{-1}$⋅$mol^{-1}$.

C$_{v}$ for $N_{2}$ is (1)(2.5)( 8.314 ).

ΔU= C$_{v}$ΔT

∴U - 625 = 20.785(400 - 300)

∴U=625 + 2078.5.

Hence, internal energy at 400k is U = 2703.5J.

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21 MAY 2022