Answer:
B.Add acid to water,not water to acid
Explanation:
they should not be mixed
Decay is a type of degradation reaction and thus is considered a first order reaction. thus the formula goes like this.
rate constant= 0.693/half life
so here...
rate constant= 0.693/1620 year^-1
The bones of the same animal found out continents far away from each other
Answer: He could add a base to the pool to neutralize the acid.
Explanation:
Chlorine is used to disinfect the pools as it produces hypochlorous acid in water. This hypochlorous acid is unstable and gives hydrochloric acid and nascent oxygen which is used to disinfect.

The excess acid is neutralized by adding base which produces salt and water and thus decrease the acidity.

Adding more acid would increase the acidity further.
I think the correct answer from the choices listed above is option C. There would be 150 sodium ions that will be transported across the cell membrane. Each ATP molecule aids in moving 3 Na+ across the membrane. So, 50 times 3 is equal to 150.