Iron has a density of 7.86 g/cm3. A sample of an unknown metal is measured and found to be 2.25 cm x 1.5 cm x 2.25 cm. The mass of the sample is 55.75 g. Is the sample iron?

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+

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