Students were given four unknown substances and asked to observe their characteristics. Their observations are shown in the table below:

Which of the unknown substances is MOST likely a metal?

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

Calculate the concentration of all species in a 0.165 m solution of h2co3.

How is an endothermic reaction identified