chemical kinetics, Chemistry

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Ask question #The first-order rate constant for the decomposition of dimethyl ether is 3.2 ? 10 -4 s -1 at 450 o C. The reaction is carried in a constant volume flask. Initially only dimethyl ether is present and the pressure is 0.350 atm. What is the pressure of the system after 8 min. Assume ideal behavior

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