Amount of oxalic acid `(COOH)_(2).2H_(2)O` in grams required to prepare 200 mL of 0.5 M oxalic acid solution is……………… .

Explanation

To determine the amount of oxalic acid `(COOH)_(2).2H_(2)O` required to prepare 200 mL of a 0.5 M solution, we can follow these steps:

### Step 1: Calculate the number of moles of oxalic acid needed
To find the number of moles (n) of oxalic acid required, we can use the formula:

\[ n = M \times V \]
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