Increase or decrease in temperature? When heat is added.

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

What does the symbol (–hfus) indicate in a phase change?

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.