Hydrazine, N2H4, reacts with oxygen to form nitrogen gas and water. N2H4(aq)+O2(g)N2(g)+2H2O(l) If 3.55g of N2H4 reacts with excess oxygen and produces 0.850L of N2, at 295K and 1.00atm, what is the percent yield of the reaction? percent yield: % A sample of Br2(g) takes 20.0 min to effuse through a membrane. How long would it take the same number of moles of Ar(g) to effuse through the same membrane