Sodium crystallizes in bcc structure with radius \(186 \times 10^{-8} \,\) \(\text{cm}. \)Calculate the edge length of the unit cell?
Identify product A in the following reaction: \(\text{C}_6\text{H}_5\text{C(O)}\text{NH}_2 + \text{H}_2\text{O} + \text{HCl} \rightarrow A \)
If \(f(x) = \dfrac{2x + 3}{3x - 2}\), \( x \neq \dfrac{2}{3} \), then \( f \circ f \) is{