Which of the following is/are a true statement about 1 mole samples of oxygen,
hydrogen, and nitrogen gas at STP?

I. Only oxygen and hydrogen are diatomic molecules.
II. All 3 samples occupy the same volume.
III. All 3 samples have the same mass.

A) I only
B) II only
C) I and II only
D) II and III only
E) I, II and III

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles

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.

How to calculate the mass of copper