I have prepared a caffeine stock solution of 0.075 M. What volume should we mix with distilled water in order to reach a standard solution of 0.0015 M and a final volume of 10
mL?
a) 0.2 mL
b) 112.5 mL
c) 50 mL
d) 2 mL

PLEASE HELP!
No Links!
I will award brainliest to the first person to answer

I think 50 ml but I am not sure

sorry

 A) -3

Explanation:

Ions are formed when an atom looses or gain electrons.

When an atom looses its electron, it results in the formation of a positive ion which is known as cation and when an atom gains electron, it results in the formation of a negative ion known as anion.

Atomic number of nitrogen is 7 and thus has 7 electrons.

Electronic configuration of nitrogen:

In order to achieve nearest noble gas configuration of neon , it must gain 3 electrons. is formed by gain of 3 electrons and thus has 10 electrons.

Thus nitrogen gains 3- charge when electron configuration of the ion is similar to the nearest noble gas to the atom.