Which of the following is true about a scientific theory
a. a theory can never be changed
b. a theory can be changed to explain new observations or experimental results
c. a theory can be formed after a single experiment
d. a theory is a proposed explanation for a hypothesis

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+

Which of these is an intensive property of a substance

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