10. What is the mass of 2.6 moles of Ag? O 2.4 x 10-2 g
O 2.9 g
O 280 g
O 1.6 x 1024 g

Which of the following is a compound? a.carbon b.oxygen c.hydrogen d.water

How is the atomic number of a nucleus changed by alpha decay

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