Heat of Vaporisation of a Substance To evaporate a sample kilogram of a substance at its boiling point, a certain amount of heat needs one to be provided. This heat is called the heat of vaporisation of the substance and is expressed in joules per kilogram [: 1. kg Activity: The evaporation heat kJ . Calculate kg how much heat needs to be of mercury is 296 provided to change 50 g of this substance into vapour at its boiling point. kJ

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Heat of Vaporisation
of a Substance
m [kg
To evaporate a sample of one
kilogram of a substance at its
boiling point, a
certain amount of heat needs
to be provided. This heat is
called the heat of vaporisation
0.
of the substance and is
expressed in joules per
kilogram [
kg
Activity: The evaporation heat
of mercury is 296
kJ
Calculate
kg
how much heat needs to be
provided to change 50 g of this
substance into vapour at its
boiling point.
Q = |
kJ
Transcribed Image Text:= LEARN36O Search 379,281 m PLUS O CLASSROOM VIDEO DISTRICT Heat of Vaporisation of a Substance m [kg To evaporate a sample of one kilogram of a substance at its boiling point, a certain amount of heat needs to be provided. This heat is called the heat of vaporisation 0. of the substance and is expressed in joules per kilogram [ kg Activity: The evaporation heat of mercury is 296 kJ Calculate kg how much heat needs to be provided to change 50 g of this substance into vapour at its boiling point. Q = | kJ
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