Question

calculate molecular weight of CH4 andH20
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Answer 1

Explanation:

Molecular mass of H2O = 2 (1.008 amu) + 16.00 amu = 18.016 amu. (ii) Molecular mass of CO2 = 12.01 amu + 2 ×16.00 amu = 44.01 amu. (iii) Molecular mass of CH4 = 12.01 amu + 4 (l. 008 amu) = 16.042 amu.

Answer 2

C= 12

H = 1

O=8

CH4 = 1+12 = 12

H20 = 2+8=10