Density

Atom Economy
Atom economy tells us about the overall efficiency of a chemical reaction, in terms of how many atoms in reactants end up in the useful product.
E.g. Our desired product is C, below are two methods to make C A + B > C = Efficient compared to,
A + B > C + D = Inefficient, some reactants have been used to make unwanted by products.
Atom Economy Calculation

1. Identify the desired product in these reactions.
2. Work out its molar mass
3. Work out molar mass of all products
4. Make sure to include ratios when you substitut