A koh solution with a volume of 400ml contains 4 moles of hoh. what is the molarity solution

What is the oxidation state of an individual bromine atom in nabro3?

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils

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