What type of reaction is most likely to occur when barium reacts with fluorine? combustion synthesis decomposition single replacement?

What is the ph of a solution with a 1.50 × 10−9 m hydroxide ion concentration?

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

Which of the following describes the entropy change as a solution is made from a liquid and solid