GS105

Practicing with MOLES

 

Calculate the formula weight (in amu) for the following:

 

NaOH   ______________

 

KAlSi₃O₈     _____________

 

Na₂SO₄   ______________

 

How many grams are in one mole of the following:

 

NaOH   ______________

 

KAlSi₃O₈     _____________

 

Na₂SO₄   ______________

 

How many atoms are in one mole of the following?

 

NaOH   ______________

 

KAlSi₃O₈     _____________

 

Na₂SO₄   ______________

 

How many moles are in:

 

200 grams of NaOH     _________________

 

678 grams of KAlSi₃O₈   _____________________

 

56 grams of Na₂SO₄   _____________________

 

How many atoms are in:

 

200 grams of NaOH     _________________

 

678 grams of KAlSi₃O₈   _____________________

 

56 grams of Na₂SO₄   _____________________

 

How much of each would you need in grams if you had:

 

3 moles of  NaOH  _______________________

 

5.2 moles of KAlSi₃O₈  _______________________

 

1.4 moles of Na₂SO₄__________________________

 

Calculate the mass (grams) of Iron (Fe) in a sample that is 3.2 moles

 

 

Calculate the number of atoms in a sample of Calcium (Ca) that has a mass of 75 grams