Solve the set of problems shown below with reference to the following information about ethanol.Ethanol (C2H5OH): molar mass = 46.069 g/mol.Density of absolute (100 % v/v) ethanol = 0.7893 g/mL.a) Calculate the molarity of absolute ethanol (100 % v/v ethanol). b) Leeuwin Estate Art Series Chardonnay 2011 has an alcohol content of 13.5% ethanol by volume (13.5% v/v). Calculate the molarity of ethanol in this winec) The legal limit for a driver’s blood alcohol in Australia is 50 mg of ethanol per 100 mL of blood (referred to as a blood alcohol content (BAC) of 0.05 %). What is the molarity of ethanol (in blood) in a person at this legal limit? d) How much Leeuwin Estate Art Series Chardonnay could a 70 kg person drink and remain under the legal limit (≤ 0.05 %)? Give your answer as a volume in mL.The blood alcohol content will be equivalent to the alcohol content in the total ‘water’ component of the human body.Assume that a 70 kg person contains 42 L of ‘water’.Ignore the metabolism, and assume the water content of the person remains constant.e) During a romantic candlelight dinner a 70 kg person drinks a bottle (750 mL) of Leeuwin Estate Art Series Chardonnay in the space of 3 hours (assume the individual starts drinking wine from the start of the dinner).Ethanol is metabolised at a constant rate of 120 mg per hour per kg body weight, regardless of its concentration. What is their blood alcohol content (mg/100 mL blood) at the end of the dinner?How long will it take for their blood alcohol level to fall to the legal limit (0.05 %)?

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Answered: Calculate the molarity of absolute…

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Chapter10: Properties Of Solutions

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Solve the set of problems shown below with reference to the following information about ethanol.

Ethanol (C₂H₅OH): molar mass = 46.069 g/mol.
Density of absolute (100 % v/v) ethanol = 0.7893 g/mL.

a) Calculate the molarity of absolute ethanol (100 % v/v ethanol).
b) Leeuwin Estate Art Series Chardonnay 2011 has an alcohol content of 13.5% ethanol by volume (13.5% v/v). Calculate the molarity of ethanol in this wine
c) The legal limit for a driver’s blood alcohol in Australia is 50 mg of ethanol per 100 mL of blood (referred to as a blood alcohol content (BAC) of 0.05 %).

What is the molarity of ethanol (in blood) in a person at this legal limit?

d) How much Leeuwin Estate Art Series Chardonnay could a 70 kg person drink and remain under the legal limit (≤ 0.05 %)? Give your answer as a volume in mL.

The blood alcohol content will be equivalent to the alcohol content in the total ‘water’ component of the human body.

Assume that a 70 kg person contains 42 L of ‘water’.

Ignore the metabolism, and assume the water content of the person remains constant.

e) During a romantic candlelight dinner a 70 kg person drinks a bottle (750 mL) of Leeuwin Estate Art Series Chardonnay in the space of 3 hours (assume the individual starts drinking wine from the start of the dinner).

Ethanol is metabolised at a constant rate of 120 mg per hour per kg body weight, regardless of its concentration.

What is their blood alcohol content (mg/100 mL blood) at the end of the dinner?
How long will it take for their blood alcohol level to fall to the legal limit (0.05 %)?

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