0.5376 g is the minimum mass of sodium sulfite that we should add.
What is Molarity ?
Molarity (M) is defined as the number of moles of solute dissolved in 1L of solution. Molarity is also known as Molar concentration. The S.I unit of Molarity is molar (M) or mol/L.
The conversion sequence is
mL solution → L solution → mol → g
[tex]80\ mL \times \frac{1\ L}{1000\ mL} \times \frac{0.04\ \text{mol Calcium nitrate solution}}{L} \times \frac{168\ \text{Calcium nitrate solution}}{\text{mol Calcium nitrate solution}}[/tex]
= 0.5376 g
Thus from the above conclusion we can say that 0.5376 g is the minimum mass of sodium sulfite that we should add.
Learn more about the Molarity here: https://brainly.com/question/26873446
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