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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