A Student Boils 9.43 Grams Of An Unknown Substances Into Vapor .If Completely Vaporizing The Substance Requiered 8,720 Joules Of Energy ,What Is The H

A student boils 9.43 grams of an unknown substances into vapor .if completely vaporizing the substance requiered 8,720 joules of energy ,what is the heat of vaporization?The heat of vaporation is joules/gram  

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Problem:

A student boils 9.43 grams of an unknown substances into vapor .if completely vaporizing the substance requiered 8,720 joules of energy ,what is the heat of vaporization?The heat of vaporation is joules/gram

Given:

m (grams) = 9.43

q (heat) = 8,720 joules

Hv (heat of vaporation) = ? unknown

Solution:

We can solve the problem using  

heat of vaporation = heat / mass (Hv = q/m)

Hv = q/m

     = 8,720 joules / 9.43 g

     = 924.708 joules/g

Answer:

Heat of Vaporization is 924.708 joules/g


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