Problem

In wine-making, glucose (C6H12O6) from grapes undergoes fermentation in the absence of oxy...

In wine-making, glucose (C6H12O6) from grapes undergoes fermentation in the absence of oxygen to produce ethanol and carbon dioxide. A bottle of vintage port wine has a volume of 750 mL and contains 135 mL of ethanol (C2H6O). Ethanol has a density of 0.789 g/mL. In 1.5 lb of grapes, there are 26 g of glucose.

port is a type of fortified wine that is produced in portugal.

when the glucose in grapes is fermented, ethanol is produced.

a. Calculate the volume percent (v/v) of ethanol in the port wine.

b. What is the molarity ( M) of ethanol in the port wine?

c. Write the balanced equation for the fermentation reaction of sugar in grapes.

d. How many grams of sugar from grapes are required to produce one bottle of port wine?

e. How many bottles of port wine can be produced from  1.0 ton of grapes (1 ton = 2000 lb) ?

Write each of the following in scientific notation:

a. 180000000 g

b. 0.00006 m

c. 750000 g

d. 0.15 mL

e. 0.024 s

f. 1500 m3

Calculate each of the following:

a. number of Ni atoms in 3.4 mol of Ni


b. number of Mg(OH)2 formula units in 1.20 mol of Mg(OH)2


c. number of Li atoms in 4.5 mol of Li

Quinine, C20H24N2O2, is a component of tonic water and bitter lemon.

a. How many moles of hydrogen are in 1.0 mol of quinine?


b. How many moles of carbon are in 5.0 mol of quinine?


c. How many moles of nitrogen are in 0.020 mol of quinine?

State the number of atoms of oxygen in the reactants and in the products for each of the following equations:

a. CH4(g) + 2O2(g) CO2(g) + 2H2O(g)


b. 4P(s) + 5O2(g) → P4O10(s)


c. 4NH3(g) + 6NO(g) → 5N2(g) + 6H2O(g)


d. 6CO2(g) + 6H2O(l) → C6H12O6(aq) + 6O2(g)

Calculate the total masses of the reactants and the products for each of the following equations:

a. 2Al(s) + 3Cl2(g) → 2AlCl3(s)


b. 4HCl(g) + O2(g) → 2Cl2(g) + 2H2O(g)

Water is a polar solvent; hexane is a nonpolar solvent. In which solvent is each of the following more likely to be soluble?

a. vegetable oil, nonpolar


b. benzene, nonpolar


c. LiCl, ionic


d. Na2SO4, ionic

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