# Moles

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- Created by: lauryntaylor
- Created on: 29-09-15 13:26

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- Moles
- Molar Gas Equation
- moles (mol) of a gas = volume (dm ) / 24 (dm mol )
- One mol of any gas, occupies the same volume at the same temperature and pressure (room)
- 1 mol of anu gas occupies 24 dm

- Atom Economy
- %= mass of desired amount (g) / mass of reactants X 100
- For mass, use Mr (molecular mass) in gmol-

- %= mass of desired amount (g) / mass of reactants X 100
- Ideal Gas Equation
- STP= Standard temperature and pressure
- 1 mol of any gas occupies 22.7 dm
- Temperature is considered 0 degrees Celsius and pressure 101 Kilo Pascals

- RTP= Room temperature and pressure
- 1 mol of anu gas occupies 24 dm
- Temperature is considered 25 degrees Celsius and pressure 101 Kilo Pascals

- pv=n RT
- p= pressure in kilo pascals
- v= volume in dm
- n= number of moles in mol
- R= the gas constant (8.314) given on exam sheet
- T= temperature in Kelvin (+273 onto temperature in Celsius)

- STP= Standard temperature and pressure
- Percentage Yeild
- %= actual mass of product/ theoretical mass of produce X 100

- Moles in Solution
- moles (mol) = concentration (mol dm ) X volume (dm )

- Moles in an element or compound
- moles (mol)= mass (g) / atomic, molecular mass (g mol )

- Percentage uncertainty
- %= uncertainty value / reading X 100
- If reading are repeated, you must multiply the uncertainty value by the number of repetition times

- Molar Gas Equation

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