How many grams of anhydrous sodium carbonate can be decomposed using 50mL of seminormal hydrochloric acid?

Explanation

To solve the problem of how many grams of anhydrous sodium carbonate (Na2CO3) can be decomposed using 50 mL of semi-normal hydrochloric acid (HCl), we can follow these steps:

### Step 1: Calculate the number of milli-equivalents of hydrochloric acid.
Given that the volume of HCl is 50 mL and its normality is 0.5 N (semi-normal), we can calculate the number of milli-equivalents using the formula:

\[ \text{Number of milli-equivalents} = \text{Volume (mL)} \times \text{Normality} \]
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