Use the following chemical equation to answer the question: N 2 +3 H 2 2 NH 3 we want to make 5.20 moles of NH 3 , how many grams of nitrogen will we need?

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

If a particle has z = 25 and 23 electrons, what is its charge?

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