What is the specific latent heat of a substance having a mass of 10 kg and released an energy of 270000 KJ?

A. 27,000,000 J/kg

B. 270,000 J/kg

What is the specific heat of a substance if 1560 cal is required to raise the temperature of a 312 g sample by 15° C?

How much thermal energy is required to boil 2.0 kg of water at into steam at The latent heat of vaporization of water is and the specific heat of steam is      

The latent heat of fusion for lead at 327.0 degrees c is 22.9 kj/kg and the specific heat of lead is 0.130 kj/kg degrees C. What is the energy needed to melt 100 grams of lead startingat 0 degrees C?