A zinc has a heat capacity of 40 J/K; what is the mass of the zinc; given that the specific heat of zinc is 380 J/kg k

A. 0.11kg
B. 0.12kg
C. 0.13kg
D. 0.14kg

Correct Answer:

Option A – 0.11kg

Explanation

Heat capacity (o) = mass (kg) specific heat of a substance (C2)

i.e Q = MC

where Q = 40 J/L, m = ?(380 J/Kgk)

40 = m × 380

m = 0.11kg (Approx)