A chemist from the laboratory of an industry dedicated to the manufacture of anticorrosive pigments and requires preparing a solution of potassium dichromate (K2Cr2O7) at 6.5%(m/v) to perform some tests. Indicate step by step the procedure for its preparation.

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?

What is the empirical formula for c4h8o2