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Topic: Need Help ASAP Due in 20 minutes!!!! PLease Help ME!!!  (Read 5241 times)

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Offline LangJO

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Need Help ASAP Due in 20 minutes!!!! PLease Help ME!!!
« on: February 11, 2010, 10:20:40 PM »
Carbon dioxide (CO2) is the gas that is mainly responsible for global warming (the greenhouse effect). The burning of fossil fuels is a major cause of the increased concentration of CO2 in the atmosphere. Carbon dioxide is also the end product of metabolism.

C6H12O6 + 6 O2 → 6 CO2 + 6 H2O

Using glucose as an example of food, calculate the annual human production of CO2 in grams, assuming that each person consumes 7.0 multiplied by 102 g of glucose per day. The world's population is 6.5 billion, and there are 365 days in a year.
« Last Edit: February 11, 2010, 10:36:23 PM by LangJO »

Offline c03rcion

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Re: Need Help ASAP Due in 20 minutes!!!! PLease Help ME!!!
« Reply #1 on: February 11, 2010, 11:34:18 PM »
Carbon dioxide (CO2) is the gas that is mainly responsible for global warming (the greenhouse effect). The burning of fossil fuels is a major cause of the increased concentration of CO2 in the atmosphere. Carbon dioxide is also the end product of metabolism.

C6H12O6 + 6 O2 → 6 CO2 + 6 H2O

Using glucose as an example of food, calculate the annual human production of CO2 in grams, assuming that each person consumes 7.0 multiplied by 102 g of glucose per day. The world's population is 6.5 billion, and there are 365 days in a year.

this problem requires the use of dimensional analysis (the conversion of units using relations expressed as ratios) and it requires stoichiometry.  

I. amt of C6H12O6 consumed (1 person/1 day) = 7.0x102g = 714g C6H12O6

II. convert mass of C6H12O6 consumed (1 person/1 day) to moles.

III.   using stoichiometry convert the moles of C6H12O6 consumed (1 person/1 day) to CO2 and then convert from moles of CO2 to mass of CO2.  ****REFER TO YOUR EQUATION*****

IV. CO2 (human annual production) = mass of CO2 produced by one person in one day times the world population times the number of days in a year

Edit by Borek: final answer removed.
« Last Edit: February 12, 2010, 03:39:17 AM by Borek »

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