Question

Q15. Calculate the mass of 1 H2O molecule in gram​

Answer 1

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One mole of H2O consist of 1 moles of H2 & 1 mole of (O)
So weight of one mole O = 16 grams
& onle mole H2= 2 grams (1×2 atoms)

So total mass or weight = 2+16 = 18 grams

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