Answer:
The concentration of a solution means the amount of solute present in a given or specific amount of solution. (presented in percentage)
For example, the Normal Saline solution normally used for different scientific experiment or so. The saline water has 0.9% of salt (sodium chloride). This is the concentration of solution of salt.
D because you are always supposed to use your schedule
Outlook is used for mainly emails. It also keeps track of your calendar, has contact and tasks.
