MOLE: AMOUNT SINGLE ELEMENT IN MOLECULE

EXERCISE 

1.  How many F atoms are in 1 mole of CF₄?

2.    How many atoms of Cu are in 4.6 mol Cu(OH)₂?  ;   

3.    How many Cu atoms are in 25.7 g of Cu(OH)₂?                 

4.    How many O and H atoms are in 1g of water, H₂O  

  

5.    How many moles of potassium ions and bromide ions in 0.25 moles of KBr?; 

6.    How many moles of calcium ions and chloride ions in 2.5 moles of CaCl₂?                   

7.    How many moles of aluminium ions and sulphate ions in 2 moles of Al₂(SO₄)₃?  

8.    If you have 4.5 x 10²⁰ molecules of SnO₂, how many moles of O do you have?         

9.    How many moles of H are in 2.5 x 10²³ molecules of C₂H₆O?   ; 

  

10. How many atoms of C is in 2.5 x 10²³ molecules of C₂H₆O?