PQ-9. A solution is made by dissolving 60 g of NaOH (molar mass= to make 300 mL of a stock solution. What volumes of this solution and distilled water, when mixed, 40 g.mol-¹) in enough distilled water will result in a solution that is approximately 1 M NaOH? mL stock solution mL distilled water (A) 20 80 (B) 20 100 60 30 (D) 60 90

Specifications for lactated Ringers solution, which is used for intravenous (IV) injections, are as follows to reach 100. mL of solution: 285315 mg Na+ 14.117.3 mg K+ 4.9Q.O mg Ca2+ 368408 mg Cl 231261 mg lactate, C3H5O3 a. Specify the amount of NaCl, KCl, CaCl2 2H2O, and NaC3H5O3 needed to prepare 100. mL lactated Ringers solution. b. What is the range of the osmotic pressure of the solution at 37C, given the preceding specifications?

Explain why solutions of HBr in benzene (a nonpolar solvent) are nonconductive, while solutions in water (a polar solvent) are conductive.

6-43 The label on a sparkling cider says it contains 22.0 g glucose (C6H12O6) 190. mg K+ , and 4.00 mg Na+ per serving of 240. mL of cider. Calculate the molarities of these ingredients in the sparkling cider.

A solution is made by dissolving 0.455 g of PbBr2 in 100 g of H2O at 50C. Based on the data in Table 8-1, should this solution be characterized as a. saturated or unsaturated b. dilute or concentrated