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An herbicide contains only C , H , Cl , and N . The complete combustion...

An herbicide contains only C , H , Cl , and N . The complete combustion of a 125.0 mg sample of the herbicide in excess oxygen produced 130.7 mL of CO2 and 76.26 mL of H2O vapor at STP. A separate analysis determined the 125.0 mg sample contained 34.46 mg Cl . Determine the percent composition of the herbicide.

percent carbon: %

percent hydrogen: %

percent chlorine: %

percent nitrogen: %

Determine the empirical formula of the herbicide.

empirical formula:

The herbicide has a molar mass of 257.16 g/mol . What is the molecular formula of the herbicide?

molecular formula:

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