Answer:
The correct answer is 10.
Explanation:
The pH of a solution can be calculated by using the following formula:
(1)
Where
is the concentration of hydrogen ions in the solution.
If we know that solution D has a hydrogen ion concentration of
, then the pH of the solution is:


Hence, the correct answer is 10.
For the first one it isn't A btw
The developing countries are cheaper for production and labor so it is economically beneficial
Start with multiplication in parentheses. 5(2) = 10 and then add and subtract to get 12 in the parentheses. then multiply by 4 to get 48