5. A neutron star, which is the remnant of an exploded massive star, consists of neutrons 14
packed together with a total density of 3.03 * 10 g/cm'. If you had a 1.40 cm sample of
this matter (about the size of a sugar cube), what would its mass be?

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.