Explain how if you have the formula of a compound you determine the percentage by mass...

Question

Question

Explain how if you have the formula of a compound you determine the percentage by mass of each element in the compound

science chemistry

Answer 1

Answer #1

Ans :-

Use the formula to calculate the mass percentage of each element in formula :

Percentage by mass of the element in the formula = Mass of the element in that compound x 100 % / Total mass of the formula

For example :-

In H₂O :

Percentage by mass of Hydrogen in H₂O = Mass of H in H₂O x 100 % / Total mass of H₂O

= 2 g x 100 % / 18 g

= 11.1 %

Similarly,

Percentage by mass of Oxygen in H₂O = Mass of O in H₂O x 100 % / Total mass of H₂O

= 16 g x 100 % / 18 g

= 88.9 %

Answer 2

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