Question

To produce 2.51 liters of a 1.55 M solution of magnesium nitrate, how many grams of magnesium nitrate must be dissolved?

Answer 1

@aaronq

Answer 2

there are a few ways to do this, i like substitution:

\(n=\dfrac{m}{Molar~mass}\) into the molarity formula \(M=\dfrac{n_{solute}}{L_{solution}}\)


\(M=\dfrac{\dfrac{m}{Molar~mass}}{L_{solution}} \rightarrow M=\dfrac{m}{L_{solution}*Molar~mass}\)

Answer 3

plug in all the values (molarity, L, and Molar mass) then solve for mass, m.

Answer 4

thanks:)

Answer 5

no problem !