Calculating Amounts
- Created by: Jasmin
- Created on: 06-01-14 14:47
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- Calculating Amounts
- 1 mole is the amount of substance that contains as many oarticles as there are atoms in exactly 12g of carbon-12
- Avogadro constant 6.02x10(23)
- Number of atoms in exactly 12g of carbon-12
- Mass in g of 1 mole of substance is known as molar mass
- Moles = mass of substance/molar mass
- Moles in solution = volume x concentration (mol dm3)
- Concentration can be expressed as parts per million ppm
- ppm = number of parts of the chemical/number of parts it is contained in x10(6)
- More moles more concentrated
- Fewer moles more dilute
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