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Determine the heat required to raise the temperature of 9.4 mole of water from 75.0oC to 125oC at atmospheric pressure. Note that water transitions from the liquid to the vapor state. Express your answers in Joules.

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The heat capacity required to raise the temperature of  9.4 mole of water from 75.0oC to 125oC at atmospheric pressure is 35429 J.

The following information is available from the question;

Number of moles =  9.4 mole

Initial temperature =  75.0oC

Final temperature = 125oC

Molar heat capacity = 75.38 J/mol °C

Now;

H = ncθ

m = Number of moles of water

c = Molar heat capacity of water

θ = Temperature rise

Substituting values;

H = 9.4 mole × 75.38 J/mol °C × ( 125oC - 75.0oC)

H = 35429 J

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