Which sample of O2 contains a total of 3:01 x 1023 molecules? A. 1.00 mole
B. 2.00 moles
C. 16.0 grams
D. 32.0 grams

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

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

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?