URGENT Mole Practice 1. How many moles of HCl are in 7.80 X 10^22 molecules?
___0.13 moles of HCI_

2. How many atoms are in 5.6 moles of Na?
3.2 E 24 atoms of Na

3. A chemical reaction produces 3.81g potassium chloride (KCI). How many formula units of
potassium chloride are there?*Find molar mass of KCI
Answer_3.08 E 22 formula units of KCI

4. Calculate the molar mass of Fe2(SO2)3. Then calculate the mass of iron(III) sulfate of 4.05X1023
formula units.
_269g Fe2(SO4)3_

5. Determine the number of liters in 4.32 grams of water (H2O)
__ 5.37LH2O___