leximen6122 leximen6122 01-05-2020 Chemistry contestada 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