A student combusted a certain quantity of methane gas in a calorimeter. The literature indicates the molar heat of combustion of methane is -278 kJ/mol. The calorimeter contained 1.25 kg of water at an initial temperature of 21º C. If the final temperature of the water rose to 37.5 ºC, how much methane (in grams) must have been combusted? Cwater= 4.184 J/g C

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Chapter6: Thermochemisty
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A student combusted a certain quantity of methane gas in a calorimeter. The
literature indicates the molar heat of combustion of methane is -278 kJ/mol. The
calorimeter contained 1.25 kg of water at an initial temperature of 21º C. If the
final temperature of the water rose to 37.5 ºC, how much methane (in grams)
must have been combusted? Cwater= 4.184 J/g C 

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