What is this chemical equation?

what quantity of energy (in joules and in calories) is required to heat a piece of iron weighing 1.3 g from 25 degrees c to 46 degrees c? okay so i have no clue what this equation is called i have to present this but i need my own equation and i cant find one because the book does not give me a name for this equation please tell me one or tell me the name of this equation thanks.