Temperature dependence of the reaction rate constant
A(g) → B(g) C(t)
is described by the equation
k = 5.4 × 1011 exp(-14750/T)(s-1).
After what time at 423 K will the partial pressure of substance B become equal to 400 hPa, if the initial pressure of substance A was 1000 hPa, and the initial pressure of substance B was zero?

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