Consider the reaction below: 2H2O(l) + energy à 2H2(g) + O2(g)
Which of the following phrases best describes this reaction?
(A) Exothermic; releases energy
(B) Exothermic; absorbs energy
(C) Endothermic; absorbs energy
(D) Endothermic; releases energy

Compare and contrast physical changes with chemical changes.

What type of organic molecule comprises the majority of a potato?

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