In an experiment involving the extraction of essential oils from a plant, 7.5 mL of benzene (C6H6, 78.11 g/mol) was mixed with 25.00 mL of hexane (C6H14, 86.18 g/mol). Both benzene and hexane are non-polar so they will homogeneously mix. The densities of benzene and hexane are 0.8765 g/mL and 0.6594 g/mL, respectively. What is the concentration of benzene (in ppm) in the original solution? What is the concentration of hexane (in ppb) in the original solution?

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".