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Calculate the heat energy needed to change the temperature of 2 kg of copper from 10°C to 110°C. heat = Kcal
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5 votes
Calculate the heat energy needed to change the temperature of 2 kg of copper from 10°C to 110°C. heat = Kcal

User Rene Saarsoo
by
4.4k points

2 Answers

5 votes

Answer:

18.4 kcal

Step-by-step explanation:

ΔQ = m c Δ t

where ΔQ is heat energy supplied in kcal , m is mass in kg , c is specific heat capacity which is 0.092 kcal / (kg C°) , Δ t = 110-10= 100C°

ΔQ = 2×0.092×100 = 18.4 kcal

User Kerstin
by
4.2k points
2 votes

Answer:

heat = 20 Kcal

Step-by-step explanation:

User Jakobinn
by
4.5k points
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