\(a)n_{O_3} = a ; n_{O_2} = b\\ M_X = 18.2 = 36(g/mol)\\ \text{Ta có : } 48a + 32b = 36(a + b)\\ \Leftrightarrow 12a = 4b \Leftrightarrow \dfrac{a}{b} = \dfrac{4}{12} = \dfrac{1}{3}(1)\\ \%V_{O_3} = \dfrac{1}{1+3}.100\% = 25\%\\ \%V_{O_2} = \dfrac{3}{1+3}.100\% = 75\%\\ b) m_X = 48a + 32b = 2,88(2)\\ (1)(2) \Rightarrow a = 0,02 ; b = 0,06\\ V_{O_3} = 0,02.22,4 = 0,448(lít) ; V_{O_2} = 0,06.22,4 = 1,344(lít)\)