Chemistry - February 2007

Why does it matter if something is water soluble or not when snorting it?

I was reading Wikipedia and I came upon this:

"As the name implies, "freebase" is the base form of cocaine, as opposed to the salt form of cocaine hydrochloride. Whereas cocaine hydrochloride is extremely soluble in water, cocaine base is insoluble in water and is therefore not suitable for drinking, snorting or injecting."

What does something being water soluble have to do with it being able to be snorted?

2007-02-01 15:29:33 · 5 answers · asked by Dave 2

2007-02-01 15:28:48 · 2 answers · asked by CR7 3

A house with a 16.2 × 103 ft2 floor area and 8.50 ft high ceilings is to be heated with propane. How many kilograms of propane would be needed to raise the temperature of the air inside the house from 63.0 oF to
73.0 oF ?. In this calculation your are ignoring the temperature of the walls etc.



The moloar specific heat of the air inside the house is 30.2 J mol −1 oC −1
The average density of air over this temperature range can be estimated to be 1.22 g/L.
The molar mass of air is 29.1 g/mol.
There are 28.317 liters in a cubic foot.
The molar heat of combustion of propane is −2220.047 kJ/mol


PLEAASE HELPPP I NEED ANSWER + EXPLANATION IF POSSIBLE :) thankyoooou!

2007-02-01 15:25:01 · 1 answers · asked by geebgeebgeeb 1

Here's a question from my AP Chemistry homework that is stumping me:

What would the mole fraction of toluene be in a solution for
which the partial pressure of benzene equaled that of
toluene? Assume only toluene and benzene vapor is present.

(Benzene: d = .8765 g/ml; Pvap = 384 torr (60 C); FW = 78.12 g/mol)
(Toluene: d = .8669 g/ml; Pvap = 133 torr (60 C); FW = 92.15 g/mol)


If you would, could you please explain your answer or show work? Thank you so much.

2007-02-01 15:13:41 · 2 answers · asked by eyanyo13 3

Thanks in advance!

2007-02-01 15:08:00 · 1 answers · asked by frogster99 2

2007-02-01 15:04:43 · 7 answers · asked by Anonymous

A house with a 18.1 × 103 ft2 floor area and 9.00 ft high ceilings is to be heated with propane. How many kilograms of propane would be needed to raise the temperature of the air inside the house from 59.0 oF to
74.0 oF ?. In this calculation your are ignoring the temperature of the walls etc.


The moloar specific heat of the air inside the house is 30.2 J mol −1 oC −1
The average density of air over this temperature range can be estimated to be 1.22 g/L.
The molar mass of air is 29.1 g/mol.
There are 28.317 liters in a cubic foot.
The molar heat of combustion of propane is −2220.047 kJ/mol

2007-02-01 15:02:43 · 1 answers · asked by nietzsche 1

A compound with the formula C2H6O2 has a boiling point of 198 C. From the data below, deduce its Lewis structure.

CH4 -182 C
CH3CH3 -89 C
CH3CH2CH3 -42 C
CH3OH 65 C
CH3CH2OH 78.5 C
CH3CH2CH2OH 97 C
CH3CH2OCH2CH3 34.5 C

2007-02-01 15:02:43 · 1 answers · asked by pa0250 1

2007-02-01 15:01:48 · 12 answers · asked by Breanna S 1

An unknown compound with molecular formula C9H18O3 shows only one signal in its proton nmr spectrum.In the IR spectrum a strong band is seen near 1300cm^-1. propose a structure for this compound.. what do i do and where do i start from........ ???????????????

2007-02-01 14:56:43 · 3 answers · asked by ME 1

this is the question:
"Suppose you are measuring the pressure inside a sealed cabinet using an open ended manometer, The atmospheric pressure is 762.4 mm Hg. If the mercury level on the side open to the atmosphere is 3.6 mm higher than on the side attached to the cabinet, what is the pressure inside the cabinet in units of kPa?"

Could you tell me how to work out this problem

2007-02-01 14:40:42 · 1 answers · asked by a.h. 2

i need help,can you explain how to do this problem its for physical science class. middle

2007-02-01 14:40:26 · 5 answers · asked by z 2

I'll give you a hint. Scientific questions kept him from getting a good night's rest.

2007-02-01 14:39:47 · 3 answers · asked by kriend 7

2007-02-01 14:39:18 · 1 answers · asked by hellomynamedoesntstartwithab 1

Mg-24 23.985 amu 78.99 percent

Mg-25 24.986 amu 10.00 percent

Mg-26 25.983 amu 11.01 percent

Using this information, calculate the atomic weight of Mg out to four significant figures.

2007-02-01 14:38:35 · 2 answers · asked by Anonymous

2007-02-01 14:37:25 · 1 answers · asked by Anonymous

2007-02-01 14:36:47 · 1 answers · asked by Anonymous

Kb=1.3X10^-3

2007-02-01 14:35:55 · 3 answers · asked by Anonymous

I need a website for a picture of an atom of sulfur. Any websites for that also?

2007-02-01 14:35:06 · 1 answers · asked by Nikki 3

2007-02-01 14:34:14 · 6 answers · asked by Nikki 3

It was sitting in a cabinet under the sink and not used as often as I previously had. The kids are grown and gone. The area under the sink is clean and dry. I owned the pan about 25-30 years. The pan now has pin head sized holes all on the sides and bottom and is useless. It is not coated with a non stick surface.

2007-02-01 14:33:53 · 2 answers · asked by kriend 7

2007-02-01 14:33:42 · 2 answers · asked by Nikki 3

the prodicts of this reaction are K2SO4, and water.
H2SO4 + 2KOH > K2SO4 + 2H2O

2007-02-01 14:31:41 · 1 answers · asked by ibrar 4

One of my children used to collect cans of soda. We still have them full of various brands. One or two leaked out all the soda awhile ago but the cans have not oxidized.

2007-02-01 14:25:16 · 2 answers · asked by kriend 7

64
Zn2+
30





a) The ion represented by the symbol has 32 electrons

b) The ion represented by the symbol has 94 protons

c) The ion represented by the symbol has 30 neutrons

d) The ion represented by the symbol has a total of 64 protons and neutrons

e) The ion represented by the symbol has an atomic number of 30

2007-02-01 14:24:32 · 3 answers · asked by Anonymous

Can you calculate the concentration of a KOH aqueous Solution with a pH of 10.5?

2007-02-01 14:21:35 · 2 answers · asked by Anonymous

If you're wearing a hazmat suit, can you smell odors outside it?

2007-02-01 14:21:08 · 2 answers · asked by mcgo 2

What is the equation for the following reactions?

a. The production of Manganese-56 by neutron bombardment of Cobalt-59.

b. The production of carbon-14 in the upper atmosphere by neutron bombardment of nitrogen-14.


If a question asks to predict the radioactive ray of radioactive isotopes, for example, carbon-14, based upon their position relative to the band of stability, would it be beta decay for carbon-14?

2007-02-01 14:18:38 · 2 answers · asked by Nodoudt 2

2007-02-01 14:17:50 · 3 answers · asked by Vritika B 1

What kind are the intermolecular interactions in sodium thiosulfate?
Thanks!

2007-02-01 14:08:55 · 1 answers · asked by :] 3