A. 530000J
B. 23200J
C. 17200J
D. 130000J

Correct Answer:

Option D = 130000J

Explanation

H = mc△θ + mL

H = ?

m = 50g, c = 4.23J/gk,L = 2260, △θ = 80ºC

H = 50 [4.23 x 80 + 2260]

= 129920 ≈ 130,000J

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