in lab you have to prepare 530.00 mL solution of 0.125 M copper (II) oxide. How many grams of solid sodium nitrate must be used to prepare a solution of this concentration?

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium