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Could you show me how to end up with these answers on 8 and 10 please?

Could you show me how to end up with these answers on 8 and 10 please?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Could you show me how to end up with these answers on 8 and 10 please?
atain viruses. Unless you need to edit, it's safer to stay in Protected View. Enable Editing 7. Naphthalene, the active ingredient in one variety of mothballs, is an organic compound that contains carbon and hydrogen only. Complete combustion of a 20.10 mg sample of naphthalene in oxygen yielded 69.00 mg of CO2 and 11.30 mg of H20. Determine the empirical formula of naphthalene. (Naphthalene C10H8 and empirical formula CSH ) 8. Xylene, an organic compound has molar mass 106.16 g/mol, is a major component of many gasoline blends, contains carbon and hydrogen only. Complete combustion of a 17.12 mg sample of xylene in oxygen yielded 56.77 mg of CO2 and 14.53 mg of H20. Determine the empirical and molecular formula of xylene. (The empirical formula is C4H5. The molecular formula of xylene is actually CsH10-) 9. Epsom salts is a hydrated ionic compound with e formula MgSO4 · XH2O. A 9.86g sample of Epsom salts was heated to drive off the water of hydration. The mass of the sample after complete dehydration was 4.82g. M8SO4-7H20 10. If 1.00 g of an unknown molecular compound contains 8.35 x 1021 molecules, what is its molar mass? 72.12g/mol hp
Transcribed Image Text:atain viruses. Unless you need to edit, it's safer to stay in Protected View. Enable Editing 7. Naphthalene, the active ingredient in one variety of mothballs, is an organic compound that contains carbon and hydrogen only. Complete combustion of a 20.10 mg sample of naphthalene in oxygen yielded 69.00 mg of CO2 and 11.30 mg of H20. Determine the empirical formula of naphthalene. (Naphthalene C10H8 and empirical formula CSH ) 8. Xylene, an organic compound has molar mass 106.16 g/mol, is a major component of many gasoline blends, contains carbon and hydrogen only. Complete combustion of a 17.12 mg sample of xylene in oxygen yielded 56.77 mg of CO2 and 14.53 mg of H20. Determine the empirical and molecular formula of xylene. (The empirical formula is C4H5. The molecular formula of xylene is actually CsH10-) 9. Epsom salts is a hydrated ionic compound with e formula MgSO4 · XH2O. A 9.86g sample of Epsom salts was heated to drive off the water of hydration. The mass of the sample after complete dehydration was 4.82g. M8SO4-7H20 10. If 1.00 g of an unknown molecular compound contains 8.35 x 1021 molecules, what is its molar mass? 72.12g/mol hp
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