Question

4. In total, how much heat is required to raise the temperature of a 450 g sample of water (c = 4.18 J/oC.g) in a saucepan that has a heat capacity of 300 J/oC from 200C to 75oC?

Answer #1

**total heat required(q) = m*c*DT + C*DT**

**m = mass of water = 450 g**

**c = specific heat of water = 4.18 j/g.c**

**DT = 200-75**

**C = heat capacity of saucepan = 300 j/c**

**
= 450*4.184*(200-75) + 300*(200-75)**

**
= 272.85 kj**

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