Specifications for lactated Ringer’s solution, which is used for intravenous (IV) injections, are as follows to reach 100. mL of solution: 

285–315 mg Na⁺

14.1–17.3 mg K⁺

4.9–6.0 mg Ca²⁺

368–408 mg Cl^-

231–261 mg lactate, C₃H₅O₃^-

a. Specify the amount of NaCl, KCl, CaCl₂ ? 2H₂O, and NaC₃H₅O₃ needed to prepare 100. mL lactated Ringer’s solution.

b. What is the range of the osmotic pressure of the solution at 37^οC, given the preceding specifications?