Finding Mass through Stoichiometry of Ethanol in a chemical equation

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SUMMARY

The discussion centers on calculating the mass of ethanol produced from a fermentation reaction involving glucose. The fermentation equation provided is C6H12O6 + 2C2H5OH + 2CO2 + Heat, with a molecular weight of ethanol at 46.7 g/mol and a density of 0.789 g/cm³. The user seeks assistance in determining the mass of ethanol from an 18% glucose solution, specifically needing to understand how to derive extensive variables from intensive variables. It is concluded that additional information is necessary to perform accurate calculations.

PREREQUISITES
  • Understanding of stoichiometry in chemical reactions
  • Knowledge of molecular weight and density calculations
  • Familiarity with fermentation processes and equations
  • Basic algebra for manipulating equations
NEXT STEPS
  • Study stoichiometric calculations in chemical reactions
  • Learn how to calculate mass from density using the formula D=M/V
  • Research fermentation processes and their byproducts
  • Explore the concept of extensive vs. intensive properties in chemistry
USEFUL FOR

Chemistry students, educators, and anyone involved in biochemical processes or fermentation studies will benefit from this discussion.

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Homework Statement



1) What is the mass of 100% Ethanol?
2) How much ethanol would be expected from 18% glucose solution?
3) What else will be generated? How can we calculate this amount?

Given:

Fermentation Equation:

C6H12O6(aq) + 2C2H5OH(aq) + 2CO2(g) + Heat
(glucose) (ethanol) (carbon dioxide) Molecular Weight of Ethanol = 46.7 g/mol
Density of Ethanol = 0.789 g/cm3
2% glucose solution contains 20g/L of glucose

Homework Equations


D=M/V

The Attempt at a Solution


To be honest I'm not sure where to start to attempt this question. A friend of mine sent me this question last night for her assignment and I was stumped. I just wanted to know if someone could help explain how I could find the mass of ethanol with only the variables given to me. I've asked my friend and she keeps insisting there were no other variables. I haven't touched chemistry in years and was just wondering if someone could refresh my memory.
 
Last edited:
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how do you find an extensive variable from an intensive variable?

lol tell him he is missing some info
 

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