b.) Aluminum metal undergoes a combination reaction with oxygen to form aluminum

Question

b.) Aluminum metal undergoes a combination reaction with oxygen to form aluminum oxide 4.) An iron ore sample contains FeO, (s) Reaction of the ore with excess CO produces iron metal and carbon dioxide. Calculate the number of grams of CO2 that are formed from 150 g of Fe2O3. Fe O (s) +3 CO (g) > 2 Fe (s) +3 CO:(8) 5.) The fermentation of glucose (Cs120%) produces ethyl alcohol (C2HsOH) and CO. CallnQ (aq) 2 CHOH (aq) + 2 COdg) How many grams of glucose are needed to form 7.50 g of ethyl alcohol? How many grams of CO2 are formed in the same reaction? (Be sure to balance the equation.)

Explanation / Answer

Given, fermentation of glucose has the following equation:

C6H12O6 ----> 2 C2H5OH + 2 CO2

1) 7.5 gm of ethyl alcohol

No. of moles of ethyl alcohol= Given mass/molar mass = 7.5/46 = 0.163 mole

Therfore number of moles of glucose required= 0.163/2 = 0.0815 mole = 14.682 gm

2) Number of moles of CO2 produced in the same reaction = 0.163 mole

Therefore, mass of CO2 produced = 7.172 gm

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