Using m1v1=m2v2, a 0.5 liters of 12 Molarity solution of NaCl was added to a 2.0 liters of water, find out the final molarity of this 2.5 liter solution

2.4 M

Explanation:

The dilution formula, M1V1 = M2V2, states that the initial molarity times the initial volume equals the final molarity times the final volume. Plug in the values and solve for M2:

12 M * 0.5 L = M2 * 2.5 L

6 = M2 * 2.5 L

M2 * 2.5 L = 6

M2 = 6 / 2.5 = 2.4 M