Answer
$$-181 \mathrm{\ MeV} $$
Work Step by Step
$\text {By using Eq. } 37-50 \text { , we get:} $
$\begin{aligned} Q &=-\Delta m c^{2}=\left(m_{\Lambda^{0}}+m_{\pi^{0}}-m_{K^{-}}-m_{p}\right) c^{2} \\ &=1115.6 \mathrm{MeV}+135.0 \mathrm{MeV}-493.7 \mathrm{MeV}-938.3 \mathrm{MeV} \\ &=-181 \mathrm{\ MeV} \end{aligned}$
