Please brainlist if you do. Please make sure it's not just a whole paragraph.

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

Which formula can be used to calculate the molar mass of hydrogen peroxide

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.