Which of the following mixtures will result in a buffer solution? I: 300 mL of 0.20 M HClO2 added to 100 mL of 0.40 M NaClO2 II: 100 mL of 0.40 M NaOH added to 200 mL of 0.20 M HClO2 III: 200 mL of 0.10 M HCl added to 300 mL of 0.20 M NaClO2 A) Only I B) Only II C) I and III D) II and III E) I, II and III

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

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action

How is the way a mixture is combined different from how a compound is combined?