impurities weaken/break the thin elastic skin hence lowering surface tension force
mwandavee answered the question on November 3, 2017 at 15:48
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(a) What is meant by specific latent heat of fusion of a substance?
(b) In an experiment to determine the specific latent heat of vaporization of water, steam at 100ºC was passed into water
contained in a well-lagged copper calorimeter. The following measurements were made:
? Mass of calorimeter = 60g
? mass of water + calorimeter = 145g
? Final mass of calorimeter + water + condensed steam = 156g
? Final temperature of the mixture = 48oC
[Specific heat capacity of water = 4200JKg¯¹k¯¹ and specific heat capacity of copper = 390JKg¯¹k¯¹]
Determine the;
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(ii) The heat gained by the water and calorimeter if the initial temperature of the calorimeter and water is 20ºC.
(iii) Given that Lvis the specific latent heat of vaporization of steam, write an expression for the heat given out by steam.
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Date posted: November 2, 2017. Answers (1)
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Date posted: November 2, 2017. Answers (1)
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