A solution contains 40 g of common salt in 320 g of water. Calculate the concentration in terms of
mass by mass percentage of the solute

Explanation

To calculate the concentration of a solution in terms of mass by mass percentage of the solute, follow these steps:

### Step 1: Identify the mass of the solute and the solvent.
- The mass of the solute (common salt) is given as 40 g.
- The mass of the solvent (water) is given as 320 g.

### Step 2: Calculate the total mass of the solution.
- The mass of the solution is the sum of the mass of the solute and the mass of the solvent.
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