A 49.50 g sample of a substance is initially at 20.7 °C. After absorbing 1633 J of heat, the temperature of the substance is 154.8 °C. What is the specific heat (c) of the substance?
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Expert's answer
2015-11-02T14:15:55-0500
c = Q / m * ∆T ∆T = T2 – T1 T2 = t2 + 273.15 = 154.8 °C+ 273.15 = 427.95 K T1 = t1 + 273.15 = 20.7 °C + 273.15 = 293.85 K ∆T = 427.95 K - 293.85 K = 134.1 K c = 1633 J / (0.0495 kg * 134.1 K) = 246 J / kg * K
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