Question

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 ? Specific
heat of platinum =0.03 cal.g1.°C-1,
[150 cal]

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Answer 1

Answer:

150 cal is the heat required

Explanation:

Given,

mass of platinum = 100 g

rise in temperature = (70-20)°C = 50°C

Specific heat capacity of platinum = 0.03 cal g⁻¹ °C⁻¹

Formula required -

ΔH = mc(Δt)

      = 100 x 0.03x 50

       = 3 x 50 = 150 cal