Question

what is the concentration of a NACL solution prepared by dissolving 9.3 G of NaCl in sufficient water to give 350 mL

Answer 1

[NaCl] = 0.45 M

Step-by-step explanation:

First of all, you should be sure of what sort of concentration do you need. There are many ways to express concentration in a solution.

Let's calculate molarity. This is moles of solute in 1 L of solution.

Molar mass NaCl = 58.45 g/m

Mass / Molar mass = Mol → 9.3 g / 58.45 g/m = 0.159 moles

Volume of solution is 350 mL

Convert mL to L (/1000)

350 mL / 1000 = 0.350L

0.159 moles / 0.350L = 0.45 M