Calculate the amount of heat required to heat a 3.3 kg gold bar from 26 ∘C to 69 ∘C. Specific heat capacity of gold is 0.128 J/g∘C.

To answer the question above, we make use of the equation,

heat = (specific heat) x mass x (change in temperature)

Substituting the known values,

heat = (0.128 J/g°C) x (3.3 kg) (1000g / 1kg) x (69°C - 26°C)

= 18163.2 J

Therefore, the amount of heat required is approximately 18163.2 J.