Find the concentration of solution in terms of weight percent if 35g of common salt is dissolved in 50g of water..

Options

A. 41%
B. 25%
C. 19%
D. 31%

Explanation

To find the concentration of a solution in terms of weight percent, follow these steps:

### Step 1: Identify the mass of solute and solvent
- The mass of the solute (common salt) is given as 35 grams.
- The mass of the solvent (water) is given as 50 grams.

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

\[ \text{Total mass of solution} = \text{mass of solute} + \text{mass of solvent} = 35\,g + 50\,g = 85\,g \]

### Step 3: Use the formula for weight percent concentration
- The weight percent concentration is calculated using the formula:

\[ \text{Weight percent} = \left( \frac{\text{mass of solute}}{\text{mass of solution}} \right) \times 100 \]

### Step 4: Substitute the values into the formula
- Substitute the mass of the solute and the total mass of the solution into the formula:

\[ \text{Weight percent} = \left( \frac{35\,g}{85\,g} \right) \times 100 \]

### Step 5: Calculate the weight percent
- Now, perform the calculation:

\[ \text{Weight percent} = \left( \frac{35}{85} \right) \times 100 \approx 41.18\% \]

- Rounding this to two decimal places, we get approximately 41.18%.

### Final Answer
- Therefore, the concentration of the solution in terms of weight percent is approximately **41.18%**.

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