The relative molecular weight of CH4?

Mr (CH4) = Ar (C) + 4 × Ar (H);
Mr (CH4) = 12 + 4 × 1 = 12 + 4 = 16.
It turns out 16.04 g / mol, but you can round up to an integer and it will be 16 g / mol
Answer: 16g / mol



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