Steps To Solving mole Problems
- decide what the questions ask
- write down the given info
- label all quantities
Mole problems road map
http://media.showme.com/files/28315/pictures/thumbs/492108/first_thumb1352935272.jpg
Hydrated Compounds
- contain water molecules in formula
- contribute to the crystallize structure of the compound
Nomenclature of Hydrates
- Anhyrdride*nH2O
- CaSO4*2H2O ----> Calcium sulfate dihydrate
Calculating "n"
- find mass of dry anhydride (mass of final product-mass of test tube)
- find mass of hydrate: (mass of starting product-mass of test tube)
- Mass of Hydrate-mass of anhydride= mass of water driven off
- convert mass of water to moles
- convert mass of anhydride to moles
- Anhydride moles/ water moles = n
Helpful links:
this video is kinda cheesy but definitely helpful!
this website summarizes and defines everything really clearly
Links for practice:
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