The chemical formula for copper (II) phosphate is Cu3(PO4)2. What is the charge on each copper ion? 2+
2-
3-
6+
3+

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

What is the molar mass of a gas that has density of 2.054 g/l

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