PLEASE HELP ME WITH THIS I ONLY HAVE 8 MINUTES I will give you extra points .

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.