Answer to Question #148802 in General Chemistry for Bria

Question

Calculate the number of grams of solute in 388.2 mL of 0.263 M calcium acetate

Answer 1

First we need to find the moles of solute in the solution;

We have 0.263 moles in 1000mL of solution,

How many moles would be in the 388.2mL of solution?

Use the formula

$Moles of solute=\dfrac{Molarity(M) x Volume(mL)}{1000mL}$

$=\dfrac{0.263mol x 388.3mL}{1000mL}$

$= 0.1020966mol$ of Calcium acetate

Secondly, Calculate mass of the solute;

$Mass of solute = Moles x Molar mass$

Molar mass of Ca(C₂H₃O₂)₂ = 158.17g/mol

Mass = 0.1020966 mol x 158.17g/mol

= 16.149g