Chapter 4 Stoichiometry: Quantitative Information about Chemical Reactions - Study Questions - Page 179d: 47

Mixing and stirring $1.06\ g$ of sodium carbonate in 500. mL of water.

Number of moles: $0.0200\ M\times 500.\ mL=10\ mmol$ Mass: $105.988\ mg/mmol\times 10\ mmol=1059.88\ Mg=1.060\ g$ Mixing and stirring $1.06\ g$ of sodium carbonate in 500. mL of water.