Question

The value of universal gas constant 8.3j the mean kinetic energy

Answer 1

Answer:

The value of universal gas constant is 8.3 J /mole - k, the mean kinetic energy of 32gm of oxygen at – 73 degree Celsius will be.

Answer 2

This is an incomplete question, here is a complete question.

The value of universal gas constant is 8.3 J/mole.K, The mean kinetic energy of 32 g of oxygen at -73°C will be?

The mean kinetic energy for diatomic gas is, 4150 J

Explanation:

Formula used  to calculate the mean kinetic energy for diatomic gas is:

$K.E=\frac{5}{2}nRT$

where,

K.E = mean kinetic energy

n = number of moles of oxygen gas = $\frac{\text{Mass of }O_2}{\text{Molar mass of }O_2}=\frac{32g}{32g/mol}=1mol$

R = universal gas constant = 8.3 J/mol.K

T = temperature = $-73^oC=273+(-73)=200K$

Now put all the given values in the above formula, we get:

$K.E=\frac{5}{2}nRT$

$K.E=\frac{5}{2}\times 1mol\times 8.3J/mol.K\times 200K$

$K.E=4150J$

Therefore, the mean kinetic energy for diatomic gas is, 4150 J

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