\(Gọi\ n_{O_2} = a(mol) ; n_{O_3} = b(mol)\\ n_X = a + b = \dfrac{3,36}{22,4} = 0,15(mol)\\ m_X = 32a + 48b = 0,15.\dfrac{56}{3}.2 =5,6(gam)\\ \Rightarrow a = 0,1 ; b = 0,05\\ O_2 + 4e\to 2O^{2-}\\ O_3 +6e \to 3O^{2-}\\ Mg \to Mg^{2+} + 2e\\\)
Bảo toàn electron :
\(n_{Mg} = \dfrac{0,1.4 + 0,05.6}{2} = 0,35(mol)\\ \Rightarrow m = 0,35.24 = 8,4(gam)\\ n_{MgO} = n_{Mg} = 0,35(mol)\\ \Rightarrow m_1 = 0,35.40 = 14(gam)\)