A student dissolves 18.g of styrene C8H8 in 275.mL of a solvent with a density of 1.06/gmL. The student notices that the

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A student dissolves 18.g of
styrene C8H8 in 275.mL of a solvent with a
density of 1.06/gmL. The student notices that the volume
of the solvent does not change when the styrene dissolves in
it.Calculate the molarity and molality of the student's solution.
Round both of your answers to 2 significant
digits.
Molarity=
molality=
2) Balance the following redox reaction in acidic solution.
Fe^2+(aq)+O2(g)→ Fe^3+(aq)+H2O(l)