tolong dibantu ya teman teman

Q = 30 kJ = 30000 J
m = 800 g = 0,8 kg
∆t = 75 - 25 = 50°C
.
.
Q = m × c × ∆t
.
c = Q / m × ∆t
c = 30000 / 0,8 × 50
c = 30000 / 40
c = 750 J/kg°C (d)