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Physics, 12.09.2019 19:10 gabbee

Question 4 of 10
2 points
what is the internal energy of 7.00 mol of n2 gas at 40°c? to solve this
problem, use the equation: udiatomie gas =
remember that r=8.31 j/(mol-k) and k = °c + 273.
o a 45.500
o b. 5820
o c. 11,600
o d. 18.2003

Answers

ansver
Answer from: gabrielar80

A. 45500 J

Explanation:

Internal energy of diatomic gas is:

U = 5/2 nRT

where n is the number of moles,

R is the universal gas constant,

and T is the absolute temperature.

Given n = 7.00 mol, R = 8.31 J/mol/K, and T = 40+273 = 313 K:

U = 5/2 (7.00 mol) (8.31 J/mol/K) (313 K)

U = 45500 J

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