Conservation of a solid to liquid by heating reversible or Irreversible

Ineed this asap part i: scientific method what is the difference between science and pseudoscience? what is the scientific method?

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

The molar mass of nickel(ni) is 58.7 g/mol. how many moles are in an 88 gram sample of nickel?