64. How much of the R enantiomer is present in 10 g of a mixture which has an enantiomeric excess of 30% of the S isomer? A) 3.0 g B) 3.5 g C) 6.5 g D) 7.0 g 65. A solution containing 0.4 g/mL of a pure S enantiomer is a 1 dm polarimeter rotates plane polarized light by +5.6°. What is the rotation of a solution containing 0.8 g/mL of the S enantiomer in the same polarimeter. A) +5.6° B) +11.2° C) +2.8° D) +1.4° 66. What is the percent ee of a mixture that has 70% of one enantiomer and 30% of the other? A) 70 B) 85 C) 40 D) 30 67. If a mixture has an ee of 90%, what is the percentage of each enantiomer? A) 65% : 35% B) 55% : 45% C) 80% : 20% D) 95% : 5%

64. How much of the R enantiomer is present in 10 g of a mixture which has an enantiomeric excess of 30% of the S isomer? A) 3.0 g B) 3.5 g C) 6.5 g D) 7.0 g 65. A solution containing 0.4 g/mL of a pure S enantiomer is a 1 dm polarimeter rotates plane polarized light by +5.6°. What is the rotation of a solution containing 0.8 g/mL of the S enantiomer in the same polarimeter. A) +5.6° B) +11.2° C) +2.8° D) +1.4° 66. What is the percent ee of a mixture that has 70% of one enantiomer and 30% of the other? A) 70 B) 85 C) 40 D) 30 67. If a mixture has an ee of 90%, what is the percentage of each enantiomer? A) 65% : 35% B) 55% : 45% C) 80% : 20% D) 95% : 5%

Anatomy & Physiology

1st Edition

ISBN:9781938168130

Author:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Publisher:Kelly A. Young, James A. Wise, Peter DeSaix, Dean H. Kruse, Brandon Poe, Eddie Johnson, Jody E. Johnson, Oksana Korol, J. Gordon Betts, Mark Womble

Chapter2: The Chemical Level Of Organization

Section: Chapter Questions

Problem 35CTQ: Magnesium is an important element in the human body, especially in bones. Magnesiums atomic number...

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