11. Determine the change in temperature of 15.33 g of a substance when 1008.05 cal of energy is placed into the
sample and the specific heat of the substance is 2.56
cal/g °C.

Heat is involved in chemical change in two ways; chemical changes either result in heat being added to or removed from an object, and chemical changes require a certain amount of heat before they can take place.

It is sure ( overimitation)

Naoh + hbr -> nabr (salt) + h2o ca (oh)2 + 2hbr - - - > ca (br)2 + 2h2o