Fe2O3(s) + 3SO3(g) → Fe2(SO4)3 how many molecules of Fe2(SO4)3 are produced if 300 atoms of SO3 are reacted?

How many molecules of SO3 are needed to react with 200 molecules of Fe2O3 given this balanced chemical equation?
Fe2O3(s) + 3SO3(g) → Fe2(SO4)3

Which of the following ocean acidification? are the most likely side effects of a ph less than 7.0 in the ocean b. more metal salts altering the ocean chemistry c. dissolution of the shells of marine organisms d. both a & b e. all of the above.

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth

What is the percent by mass of magnesium sulfate in mgso4.7h2o