The newly-discovered element X (Xeruvium) is a transition metal that can have multiple oxidation states and has a molar mass of 37.70 g/mol. What is the molar
mass of the compound X(NO2)2?
129.72 g/mol
223.30 g/mol
O 167.42 g/mol
115.74 g/mol

Which of the following best describes the formation of plasma?

How do you lengthen a pattern piece? (family and consumer science, sewing)

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.