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Physics, 23.07.2021 16:10 juliannabartra

Một bình có thể tích 0,5m^ chứa không khí ở áp suất dư 2 bar, nhiệt độ 20.C. Lượng không khí cần thoát ra khỏi bình là bao nhiêu để áp suất
trong bình có độ chân không 420 mmHg trong điều kiện nhiệt độ khí xem
như không đổi. Áp suất khí quyển là 768 mm Hg ở 18.C, p = 29kg.

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