How do you know when to convert to Grams, moles, or Avogadro's #


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I just have word problems with no clarification.

Nov 19th, 2014

Use these guideline for converting to grams, moles or Avocado's:

1.  Generally you convert moles to gram for calculating the amount of a reacting necessary to come up with a certain amount of product in a reaction. 

2.  You do moles conversion when you have to prepare a solution of certain Molarity.  For instance how many moles of HCl is required to prepare 0.5 molar concentration solution.

3.  Avogagdro's is a number of molecules or atoms present Ina mole of a substance.  So you convert to Avocado's number when you are asked to find out the number of atoms or molecules present in a quantity of a substance or a compound or an element.

Nov 19th, 2014

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