Mole Problems
1.  How many atoms are in a 0.4 moles of Fe?

 
 
 
 

2.  How many moles would 10.2 grams of oxygen equal?
 
 
 
 

3.  What is the molecular weight of elemental hydrogen? (Hint: What’s so special about hydrogen?)
 
 
 
 

4.  How much would 3.2 moles of NaCl weigh?
 
 
 
 

5.  How many molecules are in 64.3 grams of water?
 
 
 
 

6.  If you react 3 moles of hydrogen gas with oxygen, how many moles of water will you get.  Write the balanced reaction equation.
 
 
 
 


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