Question

The kinetic energy of 8 grams of hydrogen at 27°C when compared to that of 8 grams of oxygen at the same temperature is​

Answer 1

Answer:

The kinetic energy of a gas at a given temperature T is given by the expression:

KE=

2

3

nRT=

2

3

×

M

w

RT.

Here, n is the number of moles of a gas, w is the mass of gas and M is the molar mass of a gas. Thus, the kinetic energy of a gas molecule is inversely proportional to the molar mass of the gas molecule.

K.E

H

2

K.E

O

2

=

y

x

=

M

O

2

M

H

2

=

32

2

=

16

1

Hence, x=1.