36Chapter OneChemicalFoundations85. A children's pain relief elixir contains 80. mg acetaminophenper0.50 teaspoon. The dosage recommendedfor a child who weighsbetween24 and 35 lb is 1.5 teaspoons.What is the range ofacetaminophendosages, expressed in mg acetaminophen/kgbodyweight, for children who weigh between 24 and 35 lb?86. This year, like many past years, you begin to feel very sleepyafter eating a large helping of Thanksgivingturkey. Some peopleattribute this sleepiness to presence of the amino acid tryptophanin turkey. Tryptophancan be used by the body to produce sero-tonin, which can calm the brain's activity and help to bring onsleep.a.What mass in grams of tryptophanis in a 0.25-lb serving ofturkey (assume tryptophanaccounts for 1.0% of the turkeymass)?b. What mass in grams of tryptophanis in 0.25 quart of milk(assume tryptophanaccounts for 2.0% of milk by mass andthat the density of milk is 1.04 kglL)?87. In recent years, there has been a large push for an increase inthe use of renewableresourcesto produce the energy we needto power our vehicles. One of the newer fuels that has becomemore widely available is a mixture of 85% ethanol and 15% gaso-line, E85. Despite being more environmentally friendly, one of thepotential drawbacks
This is the end of the preview.
access the rest of the document.