briannaterry18 briannaterry18
  • 07-03-2017
  • Physics
contestada

How much heat is needed to boil 120 kg of water ?

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amyseal
amyseal amyseal
  • 07-03-2017
q = mc∆t, where:
q = energy flow
m = mass, 120 000 g
c = specific heat capacity, 4.81 J/gC
∆t = change in temperature, ~75 (100 - 25, which is room temperature)

Substituting in the values, we get:
q = 120000 x 4.81 x 75 = 43290000 Joules = 43.29 MJ

Hope I helped!! xx
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