Why must you run some solution through a buret prior to use?.

An observation that requires measurement is called quantitative observable or qualitative

What is the molar mass of a gas that has density of 2.054 g/l

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