# Problem: Propenoic acid, C3H4O2, is a reactive organic liquid that is used in the manufacturing of plastics, coatings, and adhesives. An unlabeled container is thought to contain this liquid. A 0.376-g sample is combusted to produce 0.202 g of water and 0.427 g of carbon dioxide.Calculate the experimental mass % of C and H in the unknown liquid used in the experiment.

###### FREE Expert Solution

Experimental mass percent:

• Molar mass CO2 = 44.01 g/mol
• mass C in CO2 = 1 x 12.01 g/mol
• Molar mass H2O = 18.02 g/mol
• mass H in H2O = 2 x 1.01 g/mol

mass element = actual mass of cpd x (mass element in cpd/molar mass cpd)

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###### Problem Details

Propenoic acid, C3H4O2, is a reactive organic liquid that is used in the manufacturing of plastics, coatings, and adhesives. An unlabeled container is thought to contain this liquid. A 0.376-g sample is combusted to produce 0.202 g of water and 0.427 g of carbon dioxide.

Calculate the experimental mass % of C and H in the unknown liquid used in the experiment.