If 98 J of heat are added to a pure gold coin with a mass of 11 g, what is its temperature change? Specific heat capacity of gold is 0.128 J/g∘C.

69.60 °C

Explanation:

Q = cmΔT ... Equation 1

Where Q = Quantity of heat added to the gold, c = specific heat capacity of the gold, m = mass of the gold, ΔT = temperature change.

Making ΔT the subject of the equation,

ΔT = Q/cm ... Equation 2

Given: Q = 98 J, c = 0.128 J/g.°C, m = 11 g.

Substituting into equation 2

ΔT = 98 / (0.128*11)

ΔT = 98/1.408

ΔT = 69.60 °C

Hence the temperature change = 69.60 °C