Nitrobenzene C6H5NO2 (123.11 g / mol), is reduced to aniline C6H5NH2 (93.12 g / mol) with metalic tin. 3 Sn(s) + 2 C6H5NO2 + 12 H+ ⟶⟶ 2 C6H5NH2 + 4 H2O + 3 Sn4+ A 0.4978 gram sample of impure nitrobenzene was treated with 1.144 g of Sn (s). When reaction was complete the residual Sn (s) was collected and measured to weigh 0.538 grams. What is the percent of nitrobenzene in the sample?

Different isotopes indicate that an element will have different numbers of

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

What is the oxidation state of each individual carbon atom in c2o42−?