NameDateBlockPercent Composition and Molecular Formula Worksheet1. Calculate the percent of nitrogen in urea, NH¿CONH,.2. Calculate the percentage of water in zinc sulfate heptahydrate.3. Calculate the percentage of oxygen in potassium chlorate.4. Calculate the percentage of tin in potassium stannate trihydrate, K2SNO3 •2H2OWrite the molecular formulas of the following compounds:5. A compound with an empirical formula of C:OH4 and a molar mass of 88 grams per mole.6. A compound with an empirical formula of C.H.O and a molar mass of 136 grams per mole.7. A compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per mole.8. A compound with an empirical formula of C:H&N and a molar mass of 46 grams per mole.Answer the following questions:9. The percentage composition of acetic acid is found to be 39.9% C, 6.7% H, and 53.4% O. Determine theempirical formula of acetic acid.10. The molar mass for question #9 was determined by experiment to be 60.0 g/mol. What is the molecularformula?11. What's the empirical formula of a molecule containing 18.7% lithium, 16.3% carbon, and 65.0% oxygen?12. A 50.51 g sample of a compound made from phosphorus and chlorine is decomposed. Analysis of theproducts showed that 11.39 g of phosphorus atoms were produced. What is the empirical formula of thecompound?13. When 2.5000 g of an oxide of mercury, (Hg O) is decomposed into the elements by heating, 2.405 g ofmercury are produced. Calculate the empirical formula.14. The compound benzamide has the following percent composition. What is the empirical formula?C= 69.40 % H= 5.825 % O = 13.21 % N= 11.57 %15. A component of protein called serine has an approximate molar mass of 100 g/mole. If the percentcomposition is as follows, what is the empirical and molecular formula of serine?C = 34.95 % H= 6.844 % O = 46.56 % N= 13.59 %16. Aniline, a starting material for urethane plastic foams, consists of C, H, and N. Combustion of suchcompounds yields CO2, H2O, and N2 as products. If the combustion of 9.71 g of aniline yields 6.63 g H20 and1.46 g N2, what is its empfrical formula?Page1 IQ +117. The molar mass of aniline is 93 g/mol. What is its moleculaformula?

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Percent Composition and Molecular Formula Worksheet 1. Calculate the percent of nitrogen in urea, NH₂CONH₂. 2. Calculate the percentage of water in zinc sulfate heptahydrate. 3. Calculate the percentage of oxygen in potassium chlorate.

Percent Composition and Molecular Formula Worksheet 1. Calculate the percent of nitrogen in urea, NH₂CONH₂. 2. Calculate the percentage of water in zinc sulfate heptahydrate. 3. Calculate the percentage of oxygen in potassium chlorate.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter2: Chemical Formulas, Equations, And Reaction Yields

Section: Chapter Questions

Problem 18P: A gaseous binary compound has a vapor density that is 2.53 times that of nitrogen at 100°C and...

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