Moles/concentration and energy change
- Created by: Sarah
- Created on: 13-03-13 17:05
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- Chemistry
- Moles
- If you have a Mole of a substance then it would be as heavy as its mass in grams- i.e. Helium would weigh 4g if you have 1 mole of it.
- Moles= mass(g)/ formula or atomic mass (Mr)
- Concentration
- Concentration= moles/ volume
- The amount of solute dissolved in a volume of solvent.
- Energy changes
- Delta H- Change in energy
- Positive= Endothermic
- Negative= exothermic
- If it gives out energy it is exothermic
- Moles
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