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23. A metal block absorbs 4500 cal of heat when heated from 30째C to 80째C. Iits thermal capacity is3) 9 gm4) 9 cal l째C1) 90gm2) 90cal l째C

Answer»

Thermal capacity is energy required to raise the temp of a substance by 1 degree kelvin/celcius.

4500/(80-30)= 90cal/kelvin



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