Why is a solution not a pure substance? a) it is made up of two substances that are chemically combined. b) it is made up of one substance. c) it is a mixture between a solute and solvent. d) the solute and solvent cannot be separated.

Ineed with a, b, c, d, and e on the long answer

An experimental procedure requires a 10 ml of acid to be dissolved

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.