How many grams of Al(OH)3 must react to produce 25.0 grams of Al? 2Al + 6H2O ---> 2Al(OH)3 + 3H2

What are the 4 phases of matter in order of increasing engery content?

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?

Which change will decrease the number of effective collisions during a chemical reaction? a. adding a catalyst b. increasing the surface area c. decreasing the temperature d. increasing the reactant concentrations e. increasing the volume of the reactants