Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Whakawhiti: Kei roto i te metoprolol he stereocenter, e rua nga enantiomers. He racemate tēnei, arā, he ranunga 1:1 o te (R) - me te (S) - puka:  Pātai: He aha te ōwehenga o te ranunga?
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