5 Thermodynamics systems, sensible heat and latent heat

1.     Determine the quantity of heat energy required to raise the temperature of 5 kg of steel from 20 °C to 800 °C.  Take the specific heat capacity of steel as 480 J kg^-1 °C^-1.

2.  What quantity of heat is necessary to raise the temperature of 12 kg of copper, of specific heat capacity 385 J kg^-1 °C^-1, from 20 °C to 315 °C? Give your answer in MJ.

3     The specific latent heat required to melt aluminium is 9130 kJ kg^-1. Find the quantity of latent heat required to melt 4 kg of aluminium at 660 °C.

4.     heat required to melt 1.5 kg of copper at 1083 °C.