A teacher has given a lab student a white chemical sample and asks her to confirm that it contains 7.03 × 1023 formula units of sodium hydroxide (NaOH). Using the balance in the laboratory, what mass of NaOH would the student have to find to verify that her teacher was correct? Round your answer to 3 significant figures.

The minerals found in bones are deposited by living cells called

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.

Which statement best describes the he properties of iconic compounds ?