The enthalpy of a reaction for a chemical change can be determined by

Explanation:

The enthalpy of a reaction for a chemical change can be determined by

Using the formula ∆H = m x s x ∆T to solve.

∆H is the change in the enthalpy of the reaction.

where,  m, the mass of our reactants,

s, the specific heat of our product,

and ∆T, the temperature change during the reaction,

Thus, we are ready to calculate the enthalpy of reaction.

Simply we can put in values into the formula ∆H = m x s x ∆T and multiply to solve.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).