解答

✨ 最佳解答 ✨

P = nRT/V

n₁RT₁/V₁ = n₂RT₂/V₂

T₁ = T , T₂ = 2T

V₁ = (4π/3)r³ , V₂ = (4π/3)(2r)³
⇒ V₂ = 8V₁

n₁RT/V₁ = n₂R·2T/(8V₁)
⇒ n₁ = n₂/4
n₁ : n₂ : (n₁+n₂) = 1 : 4 : 5

n₁ = 10mol × ⅕ = 2mol

B

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