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Find the percentage composition of sucrose

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Reference no: EM132526876

You must show your work for all questions: SOLVE THE FOLLOWING PERCENTAGE COMPOSITION PROBLEMS:

1. Find the percentage composition of sucrose (C 12 H 22 O 11 ).

2. Find the percentage composition of a sample containing 1.29 g of carbon and 1.71 g of oxygen.

3. Find the mass percentage of water in sodium carbonate decahydrate.

4. How many grams of zinc are in a 37.2-gram sample of zinc nitrate?

SOLVE THE FOLLOWING EMPIRICAL & MOLECULAR FORMULA PROBLEMS:

5. Find the empirical formula of a compound that contains 75% carbon and 25% hydrogen.

6. Find the empirical formula of a compound that contains 9.03 g magnesium and 3.48 g of nitrogen.

7. The empirical formula of a compound is NO 2 . Its molecular mass is 92 g/mol. What is its molecular formula?

8. Glucose has an empirical formula of CH 2 O. Find its molecular formula if its molecular mass is 180.0 g/mol.

9. A compound is composed of 34.2% sodium, 17.7% carbon, and 47.6% oxygen. Find its empirical formula. If its molecular mass is 134 g/mol, find its molecular formula.

Reference no: EM132526876

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