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1. How much heat is required to increase the temperature of a piece of platinum of mass 100 g from 20°C to 70°C ? Specificheat of platinum =0.03 cal.g1.°C-1,[150 cal] |
| Answer» 150 cal is the heat requiredExplanation:GIVEN,mass of platinum = 100 grise in temperature = (70-20)°C = 50°CSpecific heat CAPACITY of platinum = 0.03 cal g⁻¹ °C⁻¹Formula required -ΔH = mc(Δt) = 100 x 0.03x 50 = 3 x 50 = 150 cal | |