Explain using the binding energy curve, why energy is released in fusion and fission reactions.

Determine whether the following reaction conserve or violate baryon number.

$p^{+}\underset{}{\to }{e}^{+}+\gamma$

Determine whether the following reaction conserve or violate baryon number.

$p^{+}+p^{-}\to {\mathrm{\pi }}^{+}+{\mathrm{\pi }}^{-}$

Determine whether the following reaction conserve or violate baryon number.

$p^{+}+p-\to {\mathrm{\pi }}^{+}+{\mathrm{\pi }}^{-}+\mathrm{n}+\overline{\mathrm{n}}$