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Get Answers to all your Questions
Calculate the molecular mass of the following:(i) H2O (ii) CH4
Answers (1)
(i) H2O:
Molecular mass of H2O = (2 × Atomic mass of hydrogen) + (1 × Atomic mass of oxygen)
= [2(1.0084) + 1(16.00 u)]
= 2.016 u + 16.00 u
= 18.016 u
(ii) CH4:
The molecular mass of methane = (1 × Atomic mass of carbon) + (4 × Atomic mass of hydrogen)
= [1(12.011 u) + 4 (1.008 u)]
= 12.011 u + 4.032 u = 16.043 u
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