Question

2.) How much heat must be absorbed at 1357 K to melt a bar of copper (80 * 10 * 12 cm) assume d = 8.93 g/cm^3.

The normal boiling point is 1357 K, and heat of fusion is 13.05 KJ/mol.
Answered below.
bobpursley
heatabsorved= masscopper*Heatfusion
remembering the mass= volume*density.

Watch your units. You will have to change either mass to moles, or heatfusion to kJ/gram.

Related Questions

The normal melting point of copper is 1357 K and heat of fusion of Cu is 13.05 KJ. How much heat,... How much heat, in kilojoules, is evolved when a 3.70 kg sample of molten Cu freezes? The normal boi... 1) 2 kg of solid copper is at its melting point. How much energy does it take to melt all the copper...