How many grams of NaOH will be required to prepare 500 g solution containing 10% `(w/w)` NaOH solution?

Options

A. 100g
B. 50g
C. 0.5 g
D. 5.0 g

Explanation

To find out how many grams of NaOH are required to prepare a 500 g solution containing 10% (w/w) NaOH, we can follow these steps:

### Step 1: Understand the Definition of Weight by Weight (w/w) Percentage
The weight by weight percentage (w/w) is defined as:
\[ \text{w/w \%} = \left( \frac{\text{mass of solute}}{\text{total mass of solution}} \right) \times 100 \]
In this case, the solute is NaOH and the total mass of the solution is 500 g.
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