Question

22. Calculate the molar mass of (a) water (H20)


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Answer 1

Answer:

The average mass of one H2O molecule is 18.02 amu.

Answer 2

Answer:

Then weight of 1 atom of hydrogen= 1 u

so weight of 2 atom= 2 u

Weight of 1 atom of oxygen= 16 u

Then molecular weight of water= 2* weight of 1 atom of hydrogen+ weight of 1 atom of oxygen

Thus molecular weight of water is approximately 2+16 u = 18 u