6. Chemical Quantities & Aqueous Reactions

Hypernatremia is a medical condition where a patient has high levels of sodium in their blood, and is the result of the body containing too little water. A patient has a measured sodium level of 165 mM. If 30.0 mL of their blood were drawn, what mass (in ng) of sodium would be present?

A solution with a final volume of 750.0 mL was prepared by dissolving 30.00 mL of benzene (C₆H₆, density = 0.8787 g/mL) in dichloromethane. Calculate the molarity of benzene in the solution.

Determine the molarity of a solution formed by dissolving 97.7 g LiBr in enough water to yield 750.0 mL of solution.

What is the molarity of a solution that contains 17 g of NH₃ in 0.50 L of solution?

Commercial grade hcl solutions are typically 39.0% (by mass) hcl in water. Determine the molarity of the HCl, if the solution has a density of 1.20 g/mL.

Find the molarity of a 40.0% by mass aqueous solution of sulfuric acid, H₂SO₄, for which the density is 1.3057 g/ml.