Chemistry - January 2007

urget plzz best answerer will get ten points

2007-01-04 15:02:37 · 0 answers · asked by reporter 1

Our Organic Chemistry Professor gave us a challenge question for extra credit. We have to write a paragraph on the chemical formula of benzodiazepines and I'm having a really hard time. I have a D in the class right now, and I really could use the extra points. So far I've come up with this
R = Methyl Methyl- carboline-3-caroxylate (CCM)
R = Ethyl Ethyl - carboline-3-caroxylate (CCE)
R = Propyl Propy - carboline-3-caroxylate (CCP)
I looked up the chemical formula for Ativan and they were 7- chloro -5- (o-chlorophenyl) -1,3 - dihydro -3- hydroxy -2H- 1,4 - benzodiazepin -2-)
Do you think this is good or do I need to be more specific?

2007-01-04 14:46:26 · 1 answers · asked by Freddie 1

chocies are hydroxide ions, water, hydronium ions, and hydrogen gas

2007-01-04 14:33:42 · 3 answers · asked by Oscar 2

the chocies are alkane famliy, alkene family alkyne family and aromatic family

2007-01-04 14:32:14 · 1 answers · asked by Oscar 2

2007-01-04 14:15:14 · 3 answers · asked by Kochulazar c 1

i know the relative reactivity of metals increase as you go down the period table, and the relative reactivity of nonmetals decrease as you go down. but what about metalloids?

2007-01-04 13:55:16 · 3 answers · asked by i like turtles 3

2007-01-04 13:45:22 · 4 answers · asked by Ryoma Echizen 3

How do you determine the standard enthalpy change of the reactions when you are given the following equations?

For example,

Ba(s) + O2 (g) + H2(g) -->Ba(OH)2 (s),
and enthalpy change (delta H) = -946kJ

2007-01-04 13:34:19 · 2 answers · asked by Anonymous

2007-01-04 13:23:37 · 6 answers · asked by Anonymous

please include why

2007-01-04 13:23:20 · 7 answers · asked by unique2thextreme 2

I need help on these problems:

Calculate how many atoms of carbon are found in 7 formula units of iron(III) cyanide

For 125 grams of calcium sulfate dihydrate, how many moles are present

2007-01-04 13:21:34 · 3 answers · asked by Mia16 3

is hydrogen and oxygen safe mixed together,and when are they not safe together mixed,

2007-01-04 13:08:38 · 12 answers · asked by tugboat 4

for Mg.
the difference between the 2nd and 3rd uibuzation energies is much larger than the difference between the 1st and 2nd ionization energies. Why so?

ion. energies for Mg. : 1st: 7.6 ev
2nd: 14 ev. and 3rd: 80 ev.

(if u notice double to each energy level)
please explain

2007-01-04 12:53:47 · 3 answers · asked by chanti 3

2007-01-04 12:38:12 · 6 answers · asked by Jenny N 1

show works step by step

2007-01-04 12:33:57 · 1 answers · asked by james G 1

what are the difference between those three majors?

2007-01-04 12:27:54 · 2 answers · asked by xredfalconx512 1

SC has always baffled me. It seemed sort of impossible. But has it been truly documented that it has happened, or are all these cases of SC fake, meaning that SC is a myth? Please, help out a confused person.

2007-01-04 12:20:21 · 3 answers · asked by Hannah 1

2007-01-04 12:15:28 · 2 answers · asked by chanti 3

Student C measures distances to a dye spot and to the solvent front from the lowerd edge of a chromatogram instead of from the origin line as instructed. he obtains the following values for the measurements:
Dye spot - 12.8 cm
Solvent front - 19.8 cm
his origin line was drawn 2.5 cm from the lower edge. which of teh dyes could have caused the spot? (carmine yellow, visual purple, or skyy blue?)

if student c had followed the instructions for the preparation of the chromatograph, what would be the distance from teh bottom edge of teh chromatogram to the solvent front and to the dye spot in a properly prepared chromatograph developed for teh same period of time?

2007-01-04 12:13:34 · 1 answers · asked by Anonymous

2007-01-04 12:12:41 · 4 answers · asked by Anonymous

I have a science hw thing where i have to make the longest word i can out of all the element's chemical symbols in the periodic table. PLEASE LIST THE ELEMENTS THAT U USED!!

2007-01-04 12:11:08 · 3 answers · asked by softballchick 1

in a paper chromatogram using ethyl alcohol, a dye spot is measured to move 13.8 cm from the origin.
The solvent front for that spot is measured to have moved 20.3 cm from the origin.

A) What is the Rf value for the dye spot?

B) From an independent paper chromatograph usin alcohol, the Rf values for teh following dyes are as follows:

Carmine Yellow-.59

Visual Purple-.67

Skyy Blue-.85

What is the likely identity of the dye spot whose Rf is calculated in a?

2007-01-04 12:09:47 · 1 answers · asked by Anonymous

Fluorine

Chlorine

Bromine

Iodine

2007-01-04 11:48:12 · 4 answers · asked by Anonymous

2007-01-04 11:32:25 · 4 answers · asked by I ♥ me 4

If possible could you please provied the chemical formula.

2007-01-04 11:30:46 · 6 answers · asked by Anonymous

2007-01-04 11:23:34 · 2 answers · asked by Anonymous

I need help setting up these problems: (dimmesional analysis)

for 7 x10^33 atoms of Al, how many grams are present

What is the mass ( in amu or in grams) of 3999 formula units of beryllium bromide

What is the mass of 5 molecules of carbon dioxide

2007-01-04 11:22:01 · 3 answers · asked by Mia16 3

I'm doing Science homework and the question reads:

Does dillution solve the problem of pollution? Support your answer.


Can some one please help me??

2007-01-04 10:54:32 · 3 answers · asked by ringostarr9911 2

2007-01-04 10:47:29 · 5 answers · asked by Person 3

Dear Y! A, I am too lazy and/or stupid to do my homework. Will Somebody do it for me?
1: Which of the following is a physical property?
A: color
B: density
C: solubility
D: all of the above


2: Which of the following is a chemical property? Mercury:
A: is a silvery metal
B: can form toxic methyl mercury
C: is a liquid at room temperature
D: vaporizes at 357 degrees C


3: Which of the following does not cause a physical change?
A: dissolving sugar in coffee
B: boiling an egg
C: making ice
D: grinding meat


4: Which of the following causes a chemical reaction?
A: boiling water
B: milk going sour
C: engraving a gold coin
D: liquefying nitrogen gas


5: Which of the following take part in determining if a substance is a gas, liquid or solid?
A: temperature
B: pressure to which it is subjected
C: forces holding its basic particles together
D: all of the above

2007-01-04 10:24:29 · 4 answers · asked by Y! Jerk 1