In a chemical reaction, substance r reacts with compound xy to produce 47.0g of compound rx. if the theoretical yield of rx is 56.0 g, what is the percent yield ?

What must happen before a body cell can begin mitotic cell division

Why is permeable soil best for plants that need a lot of drainage?

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?