A first-order reaction (A B) has a half-life of 25 minutes. If the initial concentration of
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A first-order reaction (A → B) has a half-life of 25 minutes. If the initial concentration of A is 0.300 M, what is the concentration of B after 50 minutes?
(a) 0.300 M
(b) 0.225 M
(c) 0.150 M
(d) 0.100 M
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