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6 August, 10:30

A 45.0-kg sample of ice is at 0.00°C. How much heat is needed to melt it? For water, Lf=334 kJ/kg and Lv=2257 kJ/kg

A. 4.10 x 10^6 kj

B. 0.00 kj

C. 1.02 x 10^5 kj

D. 1.50 x 10 ^4 kj

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  1. 6 August, 11:03
    0
    H=ml

    H=334*45.0

    Heat Energy = 15030kJ

    or 1.50*10^4kJ

    answer: D
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