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Total K.E.of a sample of a gas which co...

Total K.E.of a sample of a gas which contain `1times10^(22)` molecules is 500cal at `-73^(0)` C.Another sample of a gas at `127^(0)C` has a total kinetic energy of 1500 cals. Then the number of molecules in the second sample of gas is

(А) `3times10^22`

(B)`2.5times10^(22)`

(C) `1.5times10^(22)`

(D) `4times10^(22)`

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