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When a 4.2 gram sample of mercury (Il) oxide, HgO is decomposed into its elements by • heating, 3.2 grams Hg is obtained and the rest is oxygen. What is the percent composition of mercury and oxygen?
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When a 4.2 gram sample of mercury (Il) oxide, HgO is decomposed into its elements by •

heating, 3.2 grams Hg is obtained and the rest is oxygen. What is the percent
composition of mercury and oxygen?

User Richard E
by
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1 Answer

4 votes

Hg = (3.2 : 4.2) x 100% = 76.19%

O = (1 : 4.2) x 100% = 23.81%

User Maverickgugu
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