A Level Chemistry Homework - Alcohols

Chemistry Homework help?

The first source below says the density of lauryl alcohol is 0.8309 g/ml.
(17.1 g) / (0.8309 g/ml) = 20.58 ml
The second source below says the density of ethanol is 0.789 g/ml.
(185 g) / (0.789 g/ml) = 234.47 ml ethanol

Supposing additive volumes (which is not a very good assumption, but lacking better information...):
(17.1 g C12H25OH) / (186.3354 g C12H25OH/mol) / (20.58 ml + 234.47 ml) =
0.0003598 mol/ml = 0.360 mol/L

[This problem would have been a lot simpler and a lot more accurate if it had asked for the molality. Are you sure you didn't mean that?]

Chemistry homework Please Help?

There is only one way to find out...Drink the whole dam bottle.

Chemistry homework help please :)?

i have to do this chem homework and i'm kind on stuck on these two questions and i was wondering if someone could please help.

1) The process in which an organic acid and an alcohol react to form an ester and water is known as esterification. Ethyl butanoate (C3H7COOC2H5) an ester is formed when the alcohol ethanol (C2H5OH) and butanoic acid (C3H7COOH) are heated in the presence of sulfuric acid.

C2H5OH(l) + C3H7COOH(l) C3H7COOC2H5(l) + H2O(l)

Determine the mass of ethyl butanoate produced if 3.70 mol of ethanol is used.

2)When copper(II) oxide is heated in the presence of hydrogen gas, elemental copper and water are produced. What mass of copper can be obtained if 28.3 g copper(II) oxide is used?

Thank you so much! :)

Help with Chem homework?

A person's blood alcohol (C2H5OH) level can be determined by titrating a sample of blood plasma with a potassium dichromate solution. The balanced reaction is:
16H + 2Cr₂O₇ + C₂H₅OH → 4Cr + 2CO₂ + 11H₂O
If 35.46 mL of 0.05961 M Cr₂O₇ is required to titrate 28.00 g plasma, what is the mass percent of alcohol in the blood.

Help with chem homework please?

Consider the boiling points of the following compounds and their solubilities in room-temperature water. Why does the solubilities in water go down as the boiling points of these alcohols go up.
Here's the pic: http://i45.tinypic.com/2zfrds7.jpg

a.Larger molecules are less attracted to one another by induced dipole-induced dipole as well as by dipole-dipole and dipole-induced dipole attractions.
b.As the boiling increases, it is more difficult to keep the alcohol from evaporating out of solution.
c.As the boiling point increases, the size of the alcohol molecules decreases.
d.Larger molecules are more attracted to one another by induced dipole-induced dipole as well as by dipole-dipole and dipole-induced dipole attractions.

Chem homework problem... Help!?

Lauryl alcohol is obtained from coconut oil and is used to make detergents. A solution of 5.00 g of lauryl alcohol in 0.100 kg of Benzene freezes at 4.1 degrees C. What is the molar mass of lauryl alcohol?

Properties of Benzene:
1. Formula Unit = C6H6
2. Molar Mass = 78 g/mol
3. M.P. of (pure) Benzene = 5.5 degrees C
4. Kf of Benzene = 5.12 degrees C/m

Higher English ( A Level) Alcohol essay?

Hi ive got to write an essay on Alcohol, am thinking about doing it on how people should moderate what they drink and discuss the long term and short term diseases,illnesses. It has to be 1000words and am wondering if you could help me on the paragraphs, what i should write about in the 1,2,3,4 paragraphs. Thank you