Question

If a solution of Co(NO3)2 has a concentration of 0.10 M, how many moles are contained in 500.0 mL of this solution?

Answer 1

Volume in liters:

500.0 mL / 1000 => 0.5 L

Molarity = 0.10 M

Number of moles:

n = M x V

n = 0.10 x 0.5

n = 0.05 moles