Trạng thái 1: \(\left\{{}\begin{matrix}p_1=1\left(atm\right)\\V_1=20.100.10^{-6}\left(m^3\right)\\T=const\end{matrix}\right.\)
Trạng thái 2: \(\left\{{}\begin{matrix}V_2=3000.10^{-6}\left(m^3\right)\\T=const\\p_2=?\end{matrix}\right.\)
\(\Rightarrow p_2V_2=p_1V_1\Leftrightarrow p_2=\frac{1.20.100}{3000}=\frac{2}{3}\left(atm\right)\)