A substance A decomposes in a first order reaction. The half-life for this reaction is 48 s. In an experiment, the initial amount of A is 1.00 mol. The amount, in moles, of A remaining at 144 s is A 0.500 B 0.333 C 0.250 D 0.125

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