A chemist needs to order sodium bicarbonate for a classroom experiment. Each of the 43 students will require 32.8 g of sodium bicarbonate for the experiment. If the chemist already has 0.55 kg of sodium bicarbonate in the cabinet, how much does the chemist need to order?

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

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

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.