\textbf{226 –} In an experiment, 10 moles of a diamine react completely with 10 moles of a diacid and are converted to water and polyamide. The reaction is:
$$\text{Water} + \text{Polyamide} \rightarrow \text{Diamine} + \text{Diacid}$$
How many moles of water are formed?
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(1) $10$ \hfill (2) $20$ \hfill (3) $30$ \hfill (4) $40$
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