CBSE Class 7 Answered
how much heat is required to rise the temperature of 500 gram of Mercury from 20 degree Celsius to 100 degree Celsius scientific heat of mercury is equal to 0.0 33 kcal/(k g dot degree Celsius)
Asked by simajpande | 04 Jan, 2020, 02:54: PM
Expert Answer
m = 500 g =0.5 kg
heat required to raise the temperture is given by,
ΔQ = msΔt
ΔQ = 0.5 x 0.033 x (100-20)
ΔQ = 0.5 x 0.033 x 80 = 1.32 kilocalorie
Thus,
ΔQ = 1.32 x 4184 = 5522.88 Joules
Answered by Shiwani Sawant | 05 Jan, 2020, 09:27: PM
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