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# a diatomic gas at 333K has an internal energy of 2930J. how many moles of gas are present?

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- electron1Lv 78 months agoFavorite Answer
P * V = n * R * T

The unit of pressure is N/m^2. The unit of volume is m^3

P * V = N * m

This is work or energy.

n * R * T is the energy

R = 22.4 liters ÷ 273˚

R * T = 22.4 * 333 ÷ 273 = 7,459.2 ÷ 273

n = 2,930 * 273 ÷ 333 = 799,890 ÷ 333

The number of moles is approximately 2,402.

I hope this is helpful for you.

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According to a table in my physics book, the value of R is 8.31 J/(mol * ˚K)

2,930 = n * 8.31 * 333

n = 2,030 ÷ 2,767.23

This is approximately 0.734 mole.

I hope this is correct.