7. Heat lost by metal = 0.2 × C × (100 - 21)
Heat gained by H2O = 0.42 × 4200 (25 - 21)
0.2 × C × (100 - 21)
0.42 × 4200 × (25 - 21)
0.2 × C × 79 = 0.42 × 4200 × 4
C = 446.58 J/ kg
sharon kalunda answered the question on March 25, 2019 at 09:14
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