Put the moon phases in order from first to last phase.

a. b, c, a, d

b. a, b, c, d

c. d, b, c, a

d. a, c, b, d

What is the overall order of reaction for rate = k[no]2[o2]

Express the following number in scientific notation. 0.026890 =

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.)