The specific rotation of a pure substance is \( -5.90^{\circ} \). P...

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The specific rotation of a pure substance is \( -5.90^{\circ} \).
P
What is the percentage of this isomer in a mixture
W
with an observed specific rotation is \( -2.95^{\circ} \) ?
(1) \( 50 \% \)
(2) \( 75 \% \)
(3) \( 0 \% \)
(4) \( 80 \% \)
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