Question

define molecular mass of h2o

Answer 1

h20=2(1)+1(16)
=2+16=18u This is the molecular mass of h20

Answer 2

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$\huge\boxed{Hey there !}$

oxygen atoms= 1.
 Molar mass of oxygen in H2O=16gm. Total molar mass of H2O= 2+16=18 gms.

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