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Which of the following would weigh the l...

Which of the following would weigh the least?
[Atomic masses : Ag = 108, N = 14, O = 16, C = 12]

A

2 gram atoms of Nitrogen

B

1 mole of Silver

C

22.4 litres of oxygen gas at 1 atmospheric pressure and 273 K

D

`6.02xx10^(23)` atoms of carbon

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