Worksheet 3.1
Moles: 1 step questions:
Mole of atoms = 6.02 x 10 23 atoms 1. How many moles in 143 bananas?
Mole of molecules = 6.02 x 10 23 molecules
2. How many moles of bicycles in 63 bicycles? 3. How many cars are there in 2.5 moles of cars? 4. How many wheels are there in 3.6 moles of wheels? 5. How many moles are there in 4.2 x 10 23 molecules? 6. How many MgSO4 molecules are there in 1.43 moles of MgSO 4 ? 7. How many moles of AlCl3 are there in 1.81 x 10 14 molecules of AlCl 3 ? 1 molecules = x# atoms (found from counting the atoms in one molecule) 8. How many atoms are there in 1 molecule of Barium Chloride? 9. How many atoms are there in 3 molecules of Aluminum Sulphate? 10. How many atoms in 33 molecules of Aluminum Chloride? 11. How many atoms of oxygen in 143 molecules of Magnesium Hydroxide? 12. How many molecules can be made of Aluminum Chloride if a person has 3.7 x 10 atoms of chlorine? 13. How many atoms are there in 43 molecules of Calcium Sulphate?
16
1 mole = x# grams (this is found from the Periodic table) 14. How many moles are there in 163 g of Na atoms? 15. How many moles in 243 g of Copper atoms? 16. How many grams are in 6.5 moles of Aluminum atoms? 17. How many grams are there in 4.8 moles of silver atoms? Molecular mass = Molecular weight = #g/#moles
Atomic mass = Atomic weight = #g/#moles
18. What is the atomic weight of element A if 3.6 moles weigh 192 g? 19. What is the atomic weight of element B if 9.3 moles weigh 192 g? 20. What is the molecular weight of compound AB if 20.0 mole weigh 45.9 g?