Calculate the mass of ice that would melt when 2kg of copper is quickly transferred from boiling water to a block of ice without heat loss (specific heat ca...

Assessment: JAMB UTME - Physics - 2021 Subject: Physics

Question 1 Report

Calculate the mass of ice that would melt when 2kg of copper is quickly transferred from boiling water to a block of ice without heat loss (specific heat capacity of copper = \(400\mathrm{Jkg^{-1}}\), latent heat of fusion of ice = \(3.3 \times 10^{5}\mathrm{Jkg^{-1}}\))

\frac{8}{33}

kg

\frac{3.3}{80}

kg

\frac{80}{33}

kg

\frac{3.3}{8}

kg

Answer Details

mc $Δ θ$ = m $λ$ f

2 x 400 (100 - 0) = m(3.3 x 10 $^{5}$ )

m = $\frac{2 \times 400 \times 100}{3.3 \times 10^{5}} = \frac{8}{33}$

Read lesson note on Heat Energy (WAEC)

Heat Energy

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