A chemist adds 0.15L of a ×7.710−5/μmolL zinc oxalate ZnC2O4 solution to a reaction flask. Calculate the mass in micrograms of zinc oxalate the chemist has added to the flask. Round your answer to 2 significant digits.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

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.

Nan element’s square on the periodic table, the number with the greatest numerical value represents the