Home » Past Questions » Physics » Calculate the mass of ice that would melt when 2kg of copper is quickly transfer...

Calculate the mass of ice that would melt when 2kg of copper is quickly transfer...


Question

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 = 400JKg-1K-1

Latent heat of fusion of ice = 3.3 x 105JKg-1

Options

A) 8/33kg

B) 33/80kg

C) 80/33kg

D) 33/8kg


The correct answer is A.

Explanation:

Heat given off by the copper = MCt
= 2 x 400 x (100 - 0)
Heat absorbed by the ice = ML
= M x 3.3 x 105
Heat lost = Heat gained
∴ M x 3.3 x 105 = 2 x 400 x 100
∴ M = (2 x 400 x 100)/3.3 x 105
= 8/33Kg

More Past Questions:


Dicussion (1)

  • Heat given off by the copper = MCt
    = 2 x 400 x (100 - 0)
    Heat absorbed by the ice = ML
    = M x 3.3 x 105
    Heat lost = Heat gained
    ∴ M x 3.3 x 105 = 2 x 400 x 100
    ∴ M = (2 x 400 x 100)/3.3 x 105
    = 8/33Kg

    Reply
    Like