If 3.29*10^25 molecules of phosphoric acid react with excess magnesium hydroxide, how many grams of magnesium phosphate, mg3(po4) 2 would be produced?

any is appreciated, !

Amixture of gaseous sulfur dioxide and oxygen are added to a reaction vessel and heated to 1000 k where they react to form so3(g). if the vessel contains 0.669 atm so2(g), 0.395 atm o2(g), and 0.0851 atm so3(g) after the system has reached equilibrium, what is the equilibrium constant kp for the reaction: 2 so2(g) o2(g) ⇌ 2 so3(g)

What type of reaction fuels the processes seen here?

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid