Which physical quantity is not used when determining the stoichiometry in this experiment?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

In which situation can a mixture always be called a solution

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with ph. if the solubility does change, pick the ph at which you'd expect the highest solubility. you'll find ksp data in the aleks data tab. compounds does solubility change with ph