Concise Chemistry Class 9>The Language of Chemistry>Percentage Composition

Percentage Composition

Author:S P Singh

9th ICSE

IMPORTANT

Important Questions on Percentage Composition

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IMPORTANT

Concise Chemistry Class 9>The Language of Chemistry>Percentage Composition> Q 1

Urea is a very important nitrogenous fertilizer. Its formula is ${CON}_{2} H_{4}$ . Calculate the mass percentage of carbon in urea.

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Concise Chemistry Class 9>The Language of Chemistry>Percentage Composition> Q 2

Calculate the percentage of each element in potassium chlorate $({KClO}_{3})$ .

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Concise Chemistry Class 9>The Language of Chemistry>Percentage Composition> Q 3

Calculate the percentage of phosphorus in calcium phosphate $[{Ca}_{3} {({PO}_{4})}_{2}]$ .

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Concise Chemistry Class 9>The Language of Chemistry>Percentage Composition> Q 4

Calculate the percentage of phosphorus in calcium dihydrogen phosphate $[Ca {(H_{2} {PO}_{4})}_{2}]$ .

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Concise Chemistry Class 9>The Language of Chemistry>Percentage Composition> Q 5

Find the mass percentage of water in Epsom salt, ${MgSO}_{4} . 7 H_{2} O$ .