(07.01 LC)
Which statement is true about endothermic and exothermic reactions?
Kinetic energy is absorbed and converted to potential energy in an endothermic reaction.
Kinetic energy is absorbed and converted to potential energy in an exothermic reaction.
Energy is released in an endothermic reaction
Energy is absorbed in an exothermic reaction
Question 21 Multiple Choice Worth 5 points)
(08.04 MC)

Why are pipes bursting in the in extremely cold weather?

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.

Percent ionization for a weak acid (ha) is determined by the following formula: percent ionization=[ha] ionized[ha] initial×100%for strong acids, ionization is nearly complete (100%) at most concentrations. however, for weak acids, the percent ionization changes significantly with concentration. the more diluted the acid is, the greater percent ionization.a certain weak acid, ha, has a ka value of 9.4×10? 7.part acalculate the percent ionization of ha in a 0.10 m solution.part bcalculate the percent ionization of ha in a 0.010 m solution