What is the formula mass of water?

1 Answer
Oscar L.
Jun 9, 2016

18.017" g/mol H"_2"O"18.017 g/mol H2O

Explanation:

Two hydrogen atoms each with an atomic mass of 1.008" g/mol"1.008 g/mol

Plus

One oxygen atom with an atomic mass of 15.999" g/mol"15.999 g/mol

(2×1.008)+15.999=18.017" g/mol"(2×1.008)+15.999=18.017 g/mol

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