Question

18. Calculate percentage composition of each element in H2O.​

Answer 1

Explanation:

Molecular mass of H 2O=2+16=18g

As there are 2 hydrogen atoms in 1 mole of water ; Molar mass of H in 1 mole of H2O=1×2=2g

Therefore %age of H in H2O = 2/18 ×100=11.1%

Also molar mass of O in 1 mole of H 2 O =16g Therefore %age of O in H 2O = 16/18×100=88.9%

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Answer 2

Answer:

answer is above

Explanation:

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