3. A rigid plastic container holds 45.5 g of methane (CH4) at a pressure of 820 torr. What is the pressure (torr) if 3.5 g of methane is removed at constant temperature?
(A) 723
(B) 757
(C) 808
(D) 794
(E) none of these

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統計： A(0), B(1), C(0), D(0), E(0) #2797294