Answer:
60 g
Explanation:
The formula relating mass (m), heat (q), and temperature change (ΔT) is
q = mCΔT Divide both sides by CΔT and switch
m = q/(CΔT)
q = 1260 J
C = the specific heat capacity of water = 4.184 J·K⁻¹g⁻¹
ΔT = T₂ - T₁ = 313 K – 308 K = 5 K
m = 1260/(4.184 × 5)
m = 1260/21
m = 60 g
