Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when taken in very large doses. A measure of toxicity is the LD 50 value (Lethal Dose, 50%). It is the quantity of material, expressed in mg of material per kg of subject-body-weight that, if administered to a population of subjects, would cause 50% of the population to die. The LD 50 value for FD&C Red Dye No. 40 is >10,000 mg/kg in rats. Assume that the LD 50 value for humans is the same as for rats. Calculate the number of mg of Allura Red present in an 12 fluid ounce glass of the beverage you used in this lab. Assume that the concentration of Allura Red in the beverage is 0.000034 M. The molar mass of Allura Red is 496.42 grams/mol 1 fl oz = 29.5735 mL
Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when taken in very large doses. A measure of toxicity is the LD 50 value (Lethal Dose, 50%). It is the quantity of material, expressed in mg of material per kg of subject-body-weight that, if administered to a population of subjects, would cause 50% of the population to die. The LD 50 value for FD&C Red Dye No. 40 is >10,000 mg/kg in rats. Assume that the LD 50 value for humans is the same as for rats. Calculate the number of mg of Allura Red present in an 12 fluid ounce glass of the beverage you used in this lab. Assume that the concentration of Allura Red in the beverage is 0.000034 M. The molar mass of Allura Red is 496.42 grams/mol 1 fl oz = 29.5735 mL
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter20: Environmental Chemistry-earth's Environment, Energy, And Sustainability
Section: Chapter Questions
Problem 41PS
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![Many common materials that we ingest, though quite safe in reasonable quantities,
become toxic when taken in very large doses. A measure of toxicity is the LD 50 value
(Lethal Dose, 50%). It is the quantity of material, expressed in mg of material per kg of
subject-body-weight that, if administered to a population of subjects, would cause
50% of the population to die. The LD 50 value for FD&C Red Dye No. 40 is >10,000
mg/kg in rats. Assume that the LD 50 value for humans is the same as for rats.
Calculate the number of mg of Allura Red present in an 12 fluid ounce glass of the
beverage you used in this lab. Assume that the concentration of Allura Red in the
beverage is 0.000034 M.
The molar mass of Allura Red is 496.42 grams/mol
1 fl oz = 29.5735 mL](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6746fa6f-1856-443b-addc-ecae5d9da9b9%2F5bf14297-b3e1-4b09-939d-6a81a136cf75%2F1ddrv0c.jpeg&w=3840&q=75)
Transcribed Image Text:Many common materials that we ingest, though quite safe in reasonable quantities,
become toxic when taken in very large doses. A measure of toxicity is the LD 50 value
(Lethal Dose, 50%). It is the quantity of material, expressed in mg of material per kg of
subject-body-weight that, if administered to a population of subjects, would cause
50% of the population to die. The LD 50 value for FD&C Red Dye No. 40 is >10,000
mg/kg in rats. Assume that the LD 50 value for humans is the same as for rats.
Calculate the number of mg of Allura Red present in an 12 fluid ounce glass of the
beverage you used in this lab. Assume that the concentration of Allura Red in the
beverage is 0.000034 M.
The molar mass of Allura Red is 496.42 grams/mol
1 fl oz = 29.5735 mL
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