Name _______________________ Date _______________ Pd. ____
Converting from Molecules (or Atoms) to Moles and back......
1. How many atoms are in 5.76 moles of aluminum?
2. How many moles are in 1.23 x 1023 atoms of astatine?
3. How many atoms are in 0.00456 moles of selenium?
4. How many moles are in 5.66 x 1021 atoms of yttrium?
5. How many molecules are in 15.3 moles of H2O?
6. How many moles are in 7.44 x 1015 molecules of CH3Cl2?
7. How many molecules are in 3.44 moles of iron (III) chloride?
8. How many moles are in 4.56 x1023 molecules of ammonium phosphate?
CHALLENGE (yes you CAN, and will, do this problem)
1. Given 3.56 moles iron (III) acetate…
a. What is the chemical formula?
b. How many molecules of iron (III) acetate do you have?
c. How many atoms of each element do you have?
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