Determine the nuclear composition (number of protons and neutrons) of the following isotopes.
(a) vanadium-51 protons neutrons
(b) zinc-64 protons neutrons
(c) antimony-121 protons neutrons
(d) gadolinium-158 protons neutrons
(e) uranium-238 protons neutrons

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

Stage in which a star’s outer layers have started to cool and grow outward?

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.