What volume of a 4.0 m stock solution of hno3 is needed to prepare 4.5 l of a 2.5 m hno3 solution? 1.8 l 2.2 l 2.8 l 7.2 l

2.8L

Explanation:

Using the dilution formular

C1 V1= C2V2

Where

C1= concentration of the stock solution= 4.0M

V1= volume of stock solution required= ???

C2= concentration to be prepared= 2.5M

V2= volume of prepared solution required= 4.5L

4.0× V1= 2.5×4.5

V1= 2.5 ×4.5/4.0

V1= 2.8L

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

i believe the answer is true.