Question

Convert the following masses into their corresponding number of moles.

6. 23.5 g of sodium chloride

7. 0.778 g of sodium cyanide

8. 0.250 g of water

9. 169.45 g of calcium acetate

10. 79.9 g of potassium permanganate

Answer 1

6. $\frac{23.5}{58.44}=0.4021$ moles

7. $\frac{0.778}{49.01}=0.0159$ moles

8. $\frac{0.250}{18.02}=0.0139$ moles

9. $\frac{169.45}{158.17}=1.0713$ moles

10. $\frac{79.9}{158.03}=0.5056$ moles