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Which of the following expression is correct (n = no. of moles of the gas, N_A = Avogadro constant,
m = mass of 1 molecule of the gas, N = no. of molecules of the gas) ?

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n = mN_A

m = N_A

N = nN_A

m = n/N_A

answer is C.

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Detailed Solution

No. of molecules(N) = no. of moles(n) x N_A

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