Me hurry
a calorimeter is a device used to measure how much heat energy is taken in or given off in a reaction. suppose after five trials of a chemical reaction, 200 kj of heat was taken in on average. what conclusion can be made about the reaction? a. it is endothermic
.b. it releases heat energy.
c. it is a combustion reaction.
d. it creates more than one product.

Option (A) is the correct answer.

Explanation:

A chemical reaction where heat energy is absorbed by the reactant molecules is known as an endothermic reaction.  

For example,

The value of = +ve for an endothermic reaction.

On the other hand, a chemical reaction in which heat energy is released by the reactant molecules is known as an exothermic reaction.  

For example, is an exothermic reaction.

As 200 kJ of heat was taken in on average by the calorimeter so, it means heat energy is absorbed by the calorimeter.

Thus, we can conclude that the given reaction is endothermic in nature.

3 hours because it is a decent distance.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.