Avogadro's Number


  1. Determine the number of atoms in 3 grams of Ca.
  2. Determine the number of atoms in 5 grams of Cu.
  3. What is the approximate weight of 5 liters of SO2 at S.T.P.?
  4. What is the weight in grams of 16.8 liters of SO3?
  5. Find the number of molecules in 4 mL of oxygen gas (O2)?
  6. What weight of N2 contains the same number of molecules as 48 grams of SO2?
  7. What weight of O2 contains the same number of molecules as 11 grams of CO2?
  8. What volume of N2 contains the same number of molecules as 32 grams of SO2?
  9. What is the percentage of carbon in sodium carbonate (Na2CO3)?
  10. What is the gram-eqivalent weight of Na2CO3?

Answers


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