Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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- When 10.0 g of a pure compound was analyzed, it was found to contain 3.65 g of K, 3.33 g of Cl, and 3.02 g of O. Determine the empirical formula of the compound.
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- Determine the empirical formula of a compound found to contain 26.52% chromium, 24.53% sulfur, and the remainder oxygen.arrow_forwardA 8.861 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 19.09 grams of CO2 and 7.817 grams of H2O are produced.In a separate experiment, the molar mass is found to be 102.1 g/mol. Determine the empirical formula and the molecular formula of the organic compound.arrow_forwardAn unknown compound that is composed of C, H and O atoms was submitted to a lab for determination of formula. Combustion in air of 1.230 g of the unknown compound yields 2.162 g CO2 and 1.033 g H2O. What is the empirical formula of the unknown compound?arrow_forward
- 8. An explosive has the following composition by mass: 15.87% Carbon, 2.22% Hydrogen, 18.5% Nitrogen and 63.41% Oxygen. What is the empirical formula of the explosive?arrow_forwardA 0.007578 g sample containing carbon, hydrogen, and oxygen was burned. Upon complete combustion, it produced 0.01452 g of CO2 and 0.000888 g of H2O. Find its empirical formula.arrow_forwardA compound is composed of elements C, H, and N. A 4.200 mg sample of the unknown compound was combusted, producing 11.394 mg of CO2 and 3.266 mg of H2O. What is the empirical formula for this compound?arrow_forward
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- 42. Thiophene is a carbon-hydrogen-sulfur compound used in the manufacture of pharmaceuticals. When burned completely in excess oxygen, its combustion products are CO2, H2O, and SO2. Combustion of a 0.535-gram sample yields 1.119 g CO2, 0.229 g H2O, and 0.407 g SO2. What is the empirical formula of thiophene?arrow_forwardAn iron-containing compound is 20.1% Fe, 11.5% S, 63.3% O, and 5.1% H. What is the empirical formula for this compound?arrow_forwardA compound with a composition of 87.5% N and 12.5% H was recently discovered. What is the empirical formula for this compound?arrow_forward
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