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11 Dec 2019

Fermentation is a complex chemical process of making wine by converting glucose into ethanol and carbon dioxide: C6H12O6(s)ï C2H5OH (l) + 2 CO2(g) a) Calculate the mass of ethanol produced if 500.0 grams of glucose reacts completely. b) Calculate the volume of carbon dioxide gas produced at STP if 100.0 grams of glucose reacts. c) If 17.5 moles of ethanol were produced, how many moles of glucose were there in the beginning?

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13 Dec 2019

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In making wine, glucose (C6H12O6) is fermented to produce ethanol (C2H5OH) and carbon dioxide (CO2), according to the following reaction. C6H12O6 â 2 C2H5OH + 2 CO2 (a) If the fermentation reaction starts with 66.0 g glucose, what is the theoretical yield of ethanol (in grams)? g (b) If 22.0 g ethanol is produced, what is the percent yield of this reaction? %

1) Determine the empirical formula of a compound that is 85.63percent C and 14.37 percent H by mass.

2) Fermentation is a complex chemical process of wine making inwhich glucose is converted into ethanol and carbon dioxide

C6H12O6----> 2C2H5OH+2CO2

Starting with 759.1g of glucose, what is the maximum amount ofethanol in grams and in liters that can be obtained by this process(density of ethanol= 0.789g/mL)?

g=?

L=?

3) Potassium is the second most abundant metal in the humanbody. calculate the followiing:

(a) the number of atoms in 6.73 moles of potassium. (scientificnotation)

(b) the number if moles of potassium that contains 8.37*10^25atoms. (scientific notation).

4) Calculate the number of oxygen molecules and the number ofoxyden atoms in 42.9g of O2.

(a) oxygen molecules= (scientific notation)

oxygen atoms= (scientific notation).

(b) Calculate the mass of 9.39*10^14 SO3 molecules. (scientificnotation).

In the following chemical reaction, how many moles of O2 are needed to produce 2.8 mol of CO2? C2H6 + O2 â CO2 + H2O?

How many moles of methane are produced when 36.6 moles of carbon dioxide gas react with excess hydrogen gas?

How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 53.6 moles of water vapor?

Plants convert carbon dioxide and water to glucose (C6H12O6) and oxygen in the process of photosynthesis.

1.Write a balanced equation for this reaction.

2. Determine how many moles of CO2 are required to produce 42.0 mol of glucose.

How many grams of sulfur can be made in the following reaction if 17.0 grams of H2S reacted with excess SO2?

2 H2S + SO2 â 2 H2O + 3 S

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