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19 solutions

Combustion Analysis

Q. Determine the molecular formula for a compound having a molar mass of 90.04 g/mol containing carbon, hydrogen, and oxygen? Combustion analysis reveals 0.501 g of CO2and 0.103 g H2O from burning 0.514 g of the compound. How many atoms of carbon are in your formula?

Solved • Oct 29, 2019

Combustion Analysis

Q. Explain why, in combustion analysis, we cannot determine the amount of oxygen in the sample directly from the amount of oxygen in the products H2O and CO2.

Solved • Oct 29, 2019

Combustion Analysis

Q. Explain how the combined mass of CO2 and H2O produced in combustion analysis can be greater than the mass of the sample being analyzed.

Solved • Oct 29, 2019

Combustion Analysis

Q. What is the empirical formula of a compound containing C, H, and O if combustion of 1.23 g of the compound yields 1.8 g CO2 and 0.74 g H2O? (a)CH3O (b)C2H3O (c)CHO (d)C2H3O2 (e)CH2O

Solved • Oct 27, 2019

Combustion Analysis

Q. Determine the masses of CO2 and H2O produced by the combustion of 0.986 g of a compound with empirical formula C3H6O2. (a)1.76 g CO2, 0.719 g H2O (b)0.480 g CO2, 0.081 g H2O (c)1.76 g CO2, 1.44 g H2O (d)0.329 g CO2, 0.657 g H2O (e)0.657 g CO2, 0.329 g H2O

Solved • Oct 27, 2019

Combustion Analysis

Q. Combustion of 25.0 g of a hydrocarbon produces 85.9 g of CO2. What is the empirical formula of the compound?

Solved • Oct 16, 2019

Combustion Analysis

Q. A 2.52-g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur is burned in excess oxygen to yield 4.32 g of CO2 and 1.01 g of H2O. Another sample of the same compound, of mass 4.14 g, yields 2.11 g of SO3. A third sample, of mass 5.66 g, yields 2.27 g of HNO3. Calculate the empirical formula of the compound

Solved • Oct 5, 2019