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26 December, 12:19

2. How many grams of water can be heated from 20.0 oC to 75oC using 12500.0 Joules?

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  1. 26 December, 12:43
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    Q=12500.0 J

    t₁=20.0°C

    t₂=75°C

    c=4200 J / (kg·°C)

    Q=cm (t₂-t₁)

    m=Q/{c (t₂-t₁) }

    m=12500.0/{4200 (75-20) }=0.0541 kg = 54.1 g
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