Question

What is the molarity of a solution that contains 17 g of `NH_3` in .50 L of solution?

Answer 1

1 molar

Explanation:

Molarity (M) = number of moles of solute (n) / volume of solution ( L)

number of moles of solute , n = mass of solute (g) / molar mass ( g/mol)

n = (17 g / 34 g/mol)

n = 1/2 = 0.5 mol

M = 0.5 mol / 0.50 L

M = 1 mol / L