Bobby and Jane dissolve 26.8 g of solid potassium iodide in water, then pour the solution into an excess of concentrated lead (II) nitrateJane carefully filters the resulting yellow precipitate from the solution and dries the solid overnight . The following day, Bobby finds the mass of the precipitate (which he knows to be Pbl 2 ) be 34.8 g. What is the percent yield of Bobby and Jane's reaction ? 2KI+Pb(NO 3 ) 2 2KNO 3 +Pbl 2

Consider the following unbalanced equation for the combustion of hexane: αc6h14(g)+βo2(g)→γco2(g)+δh2o(g) part a balance the equation. give your answer as an ordered set of numbers α, β, γ, use the least possible integers for the coefficients. α α , β, γ, δ = nothing request answer part b determine how many moles of o2 are required to react completely with 5.6 moles c6h14. express your answer using two significant figures. n n = nothing mol request answer provide feedback