The half-life for the first order conversion of cyclobutane to ethylene,
C4H8(g) → 2C2H4(g)
is 22.7 s at a particular temperature. How many seconds are needed for the partial pressure of cyclobutane to decrease from 100 mmHg to 10 mmHg?
(A) 52.0 s
(B) 75.4 s
(C) 90.0 s
(D) 227 s
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