How many moles are represented by each of these samples? (a) 170.0 g Fe2O3
(b) 12.0 mg NO2
(c) 1.6 ✕ 1016 molecules of BF3

Compare and contrast the bohr model and the electron cloud models of the atom.

Which metals are called noble metals

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