1.

Calculate the amount ofheat required to convert 15 g water at 100 celcius into steam

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Answer:

The total heat rewired is the SUM of the heat in rising the temperature of the water to 100 degrees from 25 degrees and LATENT heat as there is a phase CHANGE from liquid to valor at 100 degrees.

Q=mC(t2-t1) + mL

C=Specific heat of water

m= mass of water

L= Latent heat

t2-t1= temperature change

Q= 2.5 × 4.814 (100–25) + 2.5*334 = 1737.63



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