Question

if 100g of water is decomposed, how many grams of oxygen and hydrogen are obtained?

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Answer 1

Answer:

If 100g of water is decomposed, then 89g of oxygen and 11g of hydrogen is obtained.

Answer 2

Answer:

According to law of definite composition, all the sample of any chemical compound has the same composition of elements by mass.

H2O

molecular mass of hydrogen = 1g/mol

molecular mass of oxygen = 16g/mol

Hence, water has chemical composition of 8:1 of oxygen and hydrogen respectively by mass.

If 100grams of water is decomposed then 89grams of oxygen and 11grams of hydrogen are obtained.