Answer:
Reactants.
Step-by-step explanation:
The reactants X+Y are more stable than the products Z+Q, because they are at a <em>lower energy level.</em>
You must go "uphill" in energy to get from reactants to products.
To calculate this you need to interact a sulfate with the copper sulfate therefore when you get a copper sulfate reaction with the oxygen mask level it should create a dance dance revolution of the proxies equaling the new chemical in balance of peace birds hope this
Answer: There will be 41382 J energy must be absorbed by 45.0g of water to increase its temperature from
to
.
Explanation:
Given: Mass = 45.0 g
Initial temperature = 
Final temperature = 
Formula used to calculate heat energy is as follows.

where,
q = heat energy
m = mass of substance
C = specific heat =
(here, for water)
= initial temperature
= final temperature
Substitute the values into above formula as follows.

Thus, we can conclude that there will be 41382 J energy must be absorbed by 45.0g of water to increase its temperature from
to
.