N2-3H2 → 2NH3 How many moles of hydrogen, H2, are needed
to react with 2.0 moles of nitrogen, N2?

Can you guys me with question no. 5!

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

When a septic tank backs up a goes in to clean it out