Fe2O3 + 3 H2 ---> 2 Fe + 3 H2O How many grams Fe are produced from 16.5 g of Fe203 ? (gram to gram conversion) Molar mass of Fe2O3=160 g/mol, Molar mass of Fe= 56 g/mol

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

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?