Question

Convert 5J of heat in calories.

Answer 1

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Answer 2

Answer:

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Explanation:

Lets do step by step,

5g ice at zero to 5g water at zero,

Q1=m×lf=5×80=400 cal

5g water at 0 to 5g water at 100°C,

Q2=msΔT=5×1×100=500 cal

5g water at 100°C to 5g steam at 100°C,

Q3=mlv=5×540=2700 cal

Q=Q1+Q2+Q3=3600 cal

Option C is the correct answer