# Chemistry Unit One Equations

- Created by: Laura
- Created on: 30-12-12 10:48

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- Equations
- Empirical Formula
- Step One: For each element in the compound, divide the mass by the Ar of that element.
- Step Two: divide each of these numbers by the smallest number.

- Step One: For each element in the compound, divide the mass by the Ar of that element.
- Atom Economy
- mass of desired product/ total mass of reactants X 100

- Percentage Yield
- Actual Yield/ Theoretical Yield X 100

- Concentration
- Concentration= moles/ volume
- Moles= Concentration x Volume

- Ideal Gas Equation
- PV= nRT
- P= Pa V= m cubed n= moles R= gas constant- 8.31 T= K

- PV= nRT
- Moles
- Moles= mass/ Mr

- Empirical Formula

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