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51 Caffeine Caffeine, found in coffee, tea, chocolate, cola beverages is a highly popular stimulant that could be toxic in overdose (more than 600 mg per day). Its chemical formula is C3H10N4O2. Questions: 1- Calculate the molar mass of caffeine. 2- Determine the percentage by mass of the different chemical elements composing caffeine. 3- Calculate the number of moles of caffeine in a cup of coffe containing 80 mg of caffeine. Determine the number of caffeme molecules found in this cup. 4- Determine the number of cups of coffee that one can drink per day 5- Decaffeinated whole or ground coffee should not contain mort without intoxication hazard. than 0.1% caffeine by mass. Determine the maximum number of

51 Caffeine Caffeine, found in coffee, tea, chocolate, cola beverages is a highly popular stimulant that could be toxic in overdose (more than 600 mg per day). Its chemical formula is C3H10N4O2. Questions: 1- Calculate the molar mass of caffeine. 2- Determine the percentage by mass of the different chemical elements composing caffeine. 3- Calculate the number of moles of caffeine in a cup of coffe containing 80 mg of caffeine. Determine the number of caffeme molecules found in this cup. 4- Determine the number of cups of coffee that one can drink per day 5- Decaffeinated whole or ground coffee should not contain mort without intoxication hazard. than 0.1% caffeine by mass. Determine the maximum number of

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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moles of caffeine that could be found in a 250 g pack of decaffeinated coffee. Given: M(C) = 12g mol M(N) = 14 g. mmol N = 6. 10 mol M(H) = 1g mol M(O) = 16 g. mol %3D
Transcribed Image Text:moles of caffeine that could be found in a 250 g pack of decaffeinated coffee. Given: M(C) = 12g mol M(N) = 14 g. mmol N = 6. 10 mol M(H) = 1g mol M(O) = 16 g. mol %3D
2- Determine the percentage by mass of the different chemical 3- Calculate the number of moles of caffeine in a cup of coffee containing 80 mg of caffeine. Determine the number of caffe 5- Decaffeinated whole or ground coffee should not contain mort 4- Determine the number of cups of coffee that one can drink per da than 0.1% caffeine by mass. Determine the maximum number 51 Caffeine Caffeine, found in coffee, tea, chocolate, cola beverages is a highly popular stimulant that could be toxic in overdose (more than 600 mg per day). Its chemical formula is C3H10N402. Questions: 1- Calculate the molar mass of caffeine. 2- Determine the percentage by mass of the different cheme elements composing caffeine. molecules found in this cup. without intoxication hazard. 5- 42
Transcribed Image Text:2- Determine the percentage by mass of the different chemical 3- Calculate the number of moles of caffeine in a cup of coffee containing 80 mg of caffeine. Determine the number of caffe 5- Decaffeinated whole or ground coffee should not contain mort 4- Determine the number of cups of coffee that one can drink per da than 0.1% caffeine by mass. Determine the maximum number 51 Caffeine Caffeine, found in coffee, tea, chocolate, cola beverages is a highly popular stimulant that could be toxic in overdose (more than 600 mg per day). Its chemical formula is C3H10N402. Questions: 1- Calculate the molar mass of caffeine. 2- Determine the percentage by mass of the different cheme elements composing caffeine. molecules found in this cup. without intoxication hazard. 5- 42
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