Consider the reactions _1 2 n2(g) + _1 2 o2(g) → no(g) _1 2 n2(g) + o2(g) → no2(g) if these reactions come to equilibrium after combustion in an internal-combustion engine at 2000 k and 200 bar, estimate the mole fractions of no and no2 present for mole fractions of nitrogen and oxygen in the combustion products of 0.70 and 0.05.

Complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 0

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?