Answer
(a) $0.025$ mol
(b) $1.625$ mol
Work Step by Step
(a)
$\frac{0.20mol}{1L} \times 125 mL \times \frac{1L}{1000mL} = 0.025$ $mol$
(b)
$\frac{2.50mol}{1L} \times 650.0 mL \times \frac{1L}{1000mL} = 1.625$ $mol$
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