Chem Class- December 4, 2009

For chem we did our lab on Dilution and Creating Solutions.

 

Basically, the procedure goes like this:

1. Measure desired amount of water
2. Measure needed amount of copper (II) Chloride (__mol/L x ___L = # of mol x ___g/ 1 mol = # of g)
3. Add to the water and stir until it dissolves
4. Compare results to 5 testubes (labelled a, b, c, d, e) for the best match (lighter shades of blue to darker shades of blue)

Copper (II) Chloride

  

We also went over the make up of the upcoming test. It will consist of:

• The mole
• The moles conversions chart
• % composition, % mass, empirical formulas
• Mass of elements in compounds
• Concentration
• Molar volume
• Dilution
• Density
• Molecular Formulas