Which solution is the most concentrated?

A. 50 g of NaCl / 100 g H20

B. 15 g of Naci / 100 g H2O

C. 83 g of NaCi / 100 g H20

D. 27 g of NaCi / 100 g H20

B, i think.

Explanation:

Calculate the number of moles of solute present.

Moles of Na0H = 15.0g Na0H x 1 molNa0H over 40.00g Na0H = 0.375 mol Na0H.

Calculate the liters of solution present.

volume=225mL x iL over 1000mL = 0.225 L soln

Divide the number of moles of solute by the number of liters of solution.

Molarity = 0.375mol over 0.225L = 1.67 mol/L