Answer:
a substance that has a ph level less than 7
Explanation:
I think it’s a or c but I’m not good at these types of things
Given:
The solution decreased by
ounces every hour for 5 hours.
Remaining solution at the end of the experiment =
ounces.
To find:
The initial amount of solution.
Solution:
Let the initial amount of the solution be x.
The solution decreased by
ounces every hour for 5 hours.
Total decreased amount 

Initial amount = Remining amount + Decreased amount of solution.




Therefore, the initial amount of solution is 18 ounces.
Matter makes up everything.
Your answer is true my friend.Good luck