How much energy in kilojoules is released when 23.4 g of ethanol vapor at 83.0 ∘c is cooled to -15.0 ∘c ?

Answer : The amount of in kilojoules released is, -5.53 kJ

Explanation :

Formula used :

where,

q = heat released = ?

c = specific heat of ethanol =

m = mass of ethanol = 23.4 g

= final temperature =

= initial temperature =

Now put all the given values in the above formula, we get:

Therefore, the amount of in kilojoules released is, -5.53 kJ

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