now.com/lrn/takeAssignment/takeCovalentActivity..OC d Problems Arrange the follo

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now.com/lrn/takeAssignment/takeCovalentActivity..OC d Problems Arrange the following groups in order of decreasing priority that would allow you to determine E/Z, or a)-CHa b)-H c)-Br d)-COOH Provide a string of letters (e g, abed) as an answer with the highest priornity listed first, lowest priority last Arrange the following groups in order of decreasing priority that would allow you to determine E/Z, or R/S b)-CH2OH c)-CH2NH2 d) CH2Br a)-CHa Provide a string of letters (e.g, abcd) as an answer with the highest priornty listed first, lowest priority last Submit Answer Try Another Version 9 item attempts remaining

Explanation / Answer

The priorities are set by molecular weights. Thus, Br is highest. Next, to decide between -COOH and -CH3 (since both are carbon atoms), we check the next attached atom. -COOH has O-atom and CH3 has H-atom. Since O is heavier than H, -COOH comes before -CH3. Thus, the order is : Br > COOH > CH3 > H. Following the same logic, the correct order is : -CH2Br > -CH2OH > -CH2NH2 > -CH3

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