Calculate the molarity of the two solutions. The first solution contains 0.350 mol of NaOH in 1.05 L of solution.
molarity:

The second solution contains 14.3 g of NaCl in 879 mL of solution.
molarity:

1. 0.33 M

2. 0.278 M

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

1. 0.350 mol of NaOH in 1.05 L of solution.

n=0.35

V=1.05 L

Molarity :

2. 14.3 g of NaCl in 879 mL of solution.

mol NaCl(MW=58.5 g/mol) :

Molarity :

yes the answer is total mass in unchanged   : )