試題詳解

 3. A 100.-L flask contains a mixture of methane (CH₄) and argon gases at 25℃. The mass of argon present is 228 g and the mole fraction of methane in the mixture is 0.650. The total kinetic energy for methane in the mixture is________ J.
(A) 3.94 × 10¹
(B) 3.94 × 10⁴
(C)6.06 × 10⁴
(D) 6.06 × 10¹
(E)1.06 × 10