Chem 30A Homework Week-10 - Stoichiometry he sugar unit that circulates in your
ID: 554231 • Letter: C
Question
Chem 30A Homework Week-10 - Stoichiometry he sugar unit that circulates in your blood, providing energy to 3) Glucose is t every cell in your body. Its formula is CeH120s, and your cells break it down to water (H20) and carbon dioxide (CO2) by reacting it with oxygen (02) Write a balanced chemical equation for this reaction. Hint: sugars are called carbohydrates" because their chemical formulas appear to contain carbon plus water. It should be easy to see how many water molecules you'll get. 4) If I exhale 1.40 g of carbon dioxide per minute, how much sugar does my body consume per minute? 5) Obviously "hiExplanation / Answer
3. Glucose reacts with oxygen in the presence of various proteins in the body to generate carbon dioxide and water. This combustion or oxidation reaction is exothermic and so energy is released during the reaction. This energy is used to bind a phosphate molecule to ADP, forming ATP - the energy unit of cells. This entire process can be represented in chemical equation as:
C6H12O6 + 6O2 -----> 6CO2 + 6H2O + Energy
Carbohydrates can be seen as polymeric forms with glucose or any such sugar molecule as their monomers. Thus, the oxidation of carbohydrates containing "n" units of any sugar molecule with "m" water molecules condensed in them can be represented as:
n(C6H12O6)m(H2O) + 6nO2 -----> 6n(CO2) + 6n+m(H2O) + n(Energy)
4. From the above balanced reaction with glucose, it can be seen that for every 6 moles of carbon dioxide produced, 1 mole of sugar is consumed. So, from the molar mass of carbon dioxide of 44g/mol and that of sugars as 180g/mol, we get 1.40/44 = 0.0318moles of carbon dioxide. So, per minute, 0.0318/6 = 0.0053moles of sugar will be produced per minute. In grams, this comes as 0.0053x180 = 0.954g of sugar cosumed per minute.
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