The molecular weight of ethanol (CH3CH2OH) is46 and its density is 0.789 g/cm3.A. What is the molarity of ethanol in beer that is 5%ethanol by volume? [Alcohol content of beer varies fromabout 4% (lite beer) to 8% (stout beer).]B. The legal limit for a driver’s blood alcohol contentvaries, but 80 mg of ethanol per 100 mL of blood (usuallyreferred to as a blood alcohol level of 0.08) is typical. Whatis the molarity of ethanol in a person at this legal limit?C. How many 12-oz (355-mL) bottles of 5% beer coulda 70-kg person drink and remain under the legal limit? A70-kg person contains about 40 liters of water. Ignore themetabolism of ethanol, and assume that the water contentof the person remains constant.

Principles Of Pharmacology Med Assist
6th Edition
ISBN:9781337512442
Author:RICE
Publisher:RICE
Chapter4: The Metric System
Section: Chapter Questions
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The molecular weight of ethanol (CH3CH2OH) is
46 and its density is 0.789 g/cm3.
A. What is the molarity of ethanol in beer that is 5%
ethanol by volume? [Alcohol content of beer varies from
about 4% (lite beer) to 8% (stout beer).]
B. The legal limit for a driver’s blood alcohol content
varies, but 80 mg of ethanol per 100 mL of blood (usually
referred to as a blood alcohol level of 0.08) is typical. What
is the molarity of ethanol in a person at this legal limit?
C. How many 12-oz (355-mL) bottles of 5% beer could
a 70-kg person drink and remain under the legal limit? A
70-kg person contains about 40 liters of water. Ignore the
metabolism of ethanol, and assume that the water content
of the person remains constant.

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