Which of the following equations can be used to determine the change in enthalpy of a system? a. `deltah_"reaction"=deltah_"products "×deltah_"reactants"` b. `deltah_"reaction"=deltah_"products "÷deltah_"reactants"` c. `deltah_"reaction"= deltah_"products"+deltah_"reactants "` d. `deltah_"reaction" = deltah_"products"−deltah_"reactants "`

The correct answer is Option D.

Explanation:

Enthalpy change is defined as the difference in enthalpies of all the product and the reactants each multiplied with their respective number of moles. It is represented as

The equation used to calculate enthalpy change is of a reaction is:  

Hence, the correct answer is Option D.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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