5 g of copper was heated from 20°C to 80°C. How much heat energy was used to heat copper? (specific heat capacity of Copper is 0.092 cal g^-1°C^-1)
(A) 27.6 cal
(B) 0.0276 cal
(C) 29.5 cal
(D) 2.76 cal
(A) 27.6 cal
(B) 0.0276 cal
(C) 29.5 cal
(D) 2.76 cal
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Answer:
27.6 calories
Explanation:
80-20=60°C
60×5=300
specific heat capacity of copper is 0.092 cal g^-1 c^-1
therefore 300 × 0.092= 27.6 cal