A sample of copper absorbs 43.6 kJ of heat,resulting in a temperature rise of 90.0°C,determine the mass (in kg)of the copper sample if the specific heat capacity of copper is 0.385 J/g°C.

Question

Quizplus · Accepted Answer

The amount of heat absorbed (q) is given by the formula q = mcΔT, where m is the mass, c is the specific heat capacity, and ΔT is the temperature change. Rearranging for m gives m = q / (cΔT). Substituting the given values (q = 43.6 kJ = 43600 J, c = 0.385 J/g°C, ΔT = 90.0°C) gives m = 43600 J / (0.385 J/g°C * 90.0°C) = 1263.74 g, which is approximately 1.26 kg, closest to the given option A) 1.19 kg.

A Sample of Copper Absorbs 43