Refer to the: Web Reading List

1. Explain the genetic importance of the protein zymase in the production of ethanol in a sentence or two.

2. What year was ethanol first used in an internal combustion engine?

3. Show your calculations for the following problems.

A) How much energy (kJ) could be produced from the oxidation of the ethanol content in one gallon of the beverage that you tested?
http://webbook.nist.gov/cgi/cbook.cgi?Name=ethanol&Units=SI&cTC=on
http://webbook.nist.gov/cgi/cbook.cgi?ID=C124389&Units=SI&Mask=1
http://webbook.nist.gov/cgi/cbook.cgi?ID=C7732185&Units=SI&Mask=2

B) How much energy (kJ) could be produced from the combustion of 1 gallon of isooctane (gasoline)?

C) If gasoline sells for $4.00 / gallon, what would be the additional price for ethanol that would be needed to deliver the same amount of kJ/gal gasoline? ( Assume the sales price of ethanol is equal to gasoline. More gallons of ethanol will be needed to be to provide equal energy.) Use isooctane (density = 0.69 g/cm³) to represent gasoline.
http://webbook.nist.gov/cgi/cbook.cgi?Name=octane&Units=SI&cTC=on
http://webbook.nist.gov/cgi/cbook.cgi?ID=C124389&Units=SI&Mask=1
http://webbook.nist.gov/cgi/cbook.cgi?ID=C7732185&Units=SI&Mask=2

D) How many grams of ethanol can be oxidized by 20.00 mL of a 0.0500 M solution of K₂Cr₂O₇? Write a balanced equation for the reaction. Would this reaction produce: more, less, or the same amount of energy if the same number of moles were used in combustion? Briefly explain.

4. Write a balanced molecular equation for the oxidation of methanol CH₃OH to formic acid HCOOH using  K₂Cr₂O₇ and sulfuric acid.

5. Name three different test methods that have been used to test the amount of ethanol in a sample of breath.

6. Using your own body weight, determine the probable range for blood alcohol level after drinking 2 beers in 60 minutes. Would you be able to drive legally or would you be considered DUI (Driving Under the Influence)?

7. How long does it take for alcohol to peak in the bloodstream from the time that it is taken into the body?

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DO NOT turn-in answers to the following questions:

1) Have you had an alcoholic drink before you were 21?

2) Do more teenage males drink than females?

3) Rank the use by teens from highest to lowest of the following controlled substances: marijuana, cigarettes (tobacco), alcohol

4) If you are a female, have you ever had four or more consecutive drinks? If you are a male, have you ever had five or more consecutive drinks?

Compare your answers to the results of a survey published by the National Center on Addiction and Substance Abuse: Survey comparisons