The gases are at absolute temperature 300°K and 350°K respectively. The ratio of average kinetic energy of their molecules is(a) 7 : 6(b) 6 : 7(c) 36 : 49(d) 49 : 36
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Answer:
B) 6:7
Explanation:
Absolute temperature T1 of the gas = 300°K (Given)
Absolute temperature T2of the gas = 350°K (Given)
The temperature of gas is a measure of its kinetic energy, thus
According to the equation of kinetic molecular theory -
KE1/KE2 =T1/T2 ( where K is the constant)
= 300/350
= 6/7
= 6:7
Thus, The ratio of average kinetic energy of their molecules is 6:7
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