Solution Chemistry Example 3

Solution

1. 1
   Identify the components: solute = 20 g of salt, solvent = 480 g of water.
2. 2
   Calculate the total mass of the solution: $$m_{\text{solution}} = m_{\text{solute}} + m_{\text{solvent}} = 20 + 480 = 500\,\text{g}$$
3. 3
   Apply the mass percent formula: $$\text{Mass percent} = \frac{m_{\text{solute}}}{m_{\text{solution}}} \times 100\% = \frac{20}{500} \times 100\% = 4\%$$