Chemistry - September 2007

Name three examples of synthetic fertilizers which are used in agriculture.

2007-09-04 01:48:11 · 4 answers · asked by jack_hock2003 1

Besides fertilizers, ammonium sulphate is also used as an agriculture spray adjuvant for water soluble pesticides. Explain the function of ammonium sulphate in this area.

2007-09-04 01:46:58 · 3 answers · asked by jack_hock2003 1

why is it that all the sodium hydroxide reacts first followed by the sodium carbonate? is it because the dissociation of sodium hydroxide blocks the dissociation of the weaker base, sodium carbonate, due to common ion effect, sodium ions being the common ion?

2007-09-04 01:32:46 · 2 answers · asked by badegg_11sg 2

2007-09-04 00:13:14 · 3 answers · asked by GyuodHead 2

And why does the property help explain why ice bergs float?

2007-09-04 00:08:47 · 4 answers · asked by Anonymous

I am using Potasium Tetraphynlyborate.... I dont know why the high number formula is an advantage...

Cheers.

2007-09-03 23:21:41 · 1 answers · asked by Anonymous

If a patient had overdosed on a drug with pKa = 9.5 (a weak acid), would it be better to adjust the patients urinary pH to be ~8 or ~4 . Why?

2007-09-03 22:22:33 · 1 answers · asked by Anonymous

What is he theoretical values of heat of neutralization for the following:

KOH Vs HCL
KOH Vs HNO3
CH3COOH Vs HCL
CH3COOH Vs HNO3?

cant seem to find a list online anwhere =\

2007-09-03 21:53:01 · 1 answers · asked by feenux 1

for example:

ethanol

C6H12O6 (s) → 2 CH3CH2OH (l) + 2 CO2 (g)
is delta H = 260kJ/mol

this is an endothermic reaction

2007-09-03 21:22:14 · 2 answers · asked by Anonymous

waiting for your response

2007-09-03 20:39:34 · 3 answers · asked by Anonymous

2007-09-03 20:06:20 · 2 answers · asked by Anonymous

I have purchased 375 Grams of Epsom Salts (Magnesium Suplate) and i have heard you can using it in a ratio of 2:1 (2 parts salt and 1 part sugar) to make a smoke grenade. I really need to know because i cant buy saltpeter here in australia:)

2007-09-03 20:00:57 · 4 answers · asked by Anonymous

2007-09-03 19:32:51 · 5 answers · asked by aishah a 1

2007-09-03 19:00:46 · 4 answers · asked by Anonymous

I'm doing a pharmacology experiment and am kind of confused using log equations. The question is determine what the percentage of drug X in the ionised form would be at pH 5 when the pKa of drug X = 5.8. I'm confused with how to get the percentage from the Henderson-Hasselbach equation.

2007-09-03 18:57:29 · 5 answers · asked by Anonymous

2007-09-03 18:43:42 · 3 answers · asked by Anonymous

2007-09-03 17:18:17 · 8 answers · asked by Aqua 2

Its the red one with a 3 underneath so its a flammable liquid thats all i know

2007-09-03 17:14:48 · 4 answers · asked by doglover0876 1

A carbon skeleton is covalently bonded to both an amino group and a carboxyl group. When placed in water it...

a. would function only as an acid because of the carboxyl group
b. would function only as a base b/c of the amino group
c. would function as neither an acid nor a base
d. would function as both an acid and a base
e. is impossible to determine how it would function

2007-09-03 16:24:26 · 1 answers · asked by couturechic16 1

A laundry tubhas a capacity of 67 L. If you fill it up with 37 L of water. Will it overflow if you submerge a steel drum with a diameter of 19 cm. and a length of 102 cm.??
Thanks

2007-09-03 15:52:28 · 3 answers · asked by coolhomie9 1

If Salt dissolves in water what does that mean? What does it mean that poppy seeds will float in water?

2007-09-03 15:48:38 · 4 answers · asked by Brittney 2

My assignment is to find chemical additives in normal household products and to determine the structual and functional nature of each chemical and why the compund might be added to the product. These are the products I picked....
Toaster Pastries...Sodium Bicarbonate
Spaghettioes...Ferrous Sulfate
Marshmallows...Tetrasodium Pyrophosphate
Tylenol...Acetaminophen
Pain Relever...Naproxen
Lotion...Stearic Acid
Foundation...Iron Oxide
Hand Soap...Sodium Chloride
Stain and Odor Remover...Isoprophyl
Glass Cleaner...Ammonia
Raid...Tetramethrin

I think I did it wrong. For example, for Na4P2O7 (marshmallow) , i wrote that its used as a bufferinf agent, an emulsifier, and a thickening agent and is often used as a food additive. I think that I am supposed to say exactly what reacts with what or bonds with what to do this etc. Do you have any idea how to answer for any of the compounds i listed? I dont! PLease help!

2007-09-03 15:46:45 · 1 answers · asked by Me 3

2007-09-03 15:41:54 · 2 answers · asked by Mark C 1

for example i have a fever of 102.0 what does the body do to get back to its normal body temperature of 98.6

2007-09-03 15:13:03 · 3 answers · asked by mike 1

- need for Bio AP quest. tomorrow...answer ASAP...PLEASE!!!

2007-09-03 15:10:52 · 4 answers · asked by Anonymous

does anyone know how to remove oxidation from nickel?
I have old nickel coins that have crud all over them, and I have tried all the conventional methods and most do not work.
now the only things remaining are the harsher acids. thanks

2007-09-03 15:04:58 · 2 answers · asked by art_flood 4

Can you please tell me how you evaporate water i need to know for a chemistry experiment. thank you

2007-09-03 14:52:54 · 4 answers · asked by Brittney 2

which chemistry chemical container, is used for heating chemicals....

i know its not..
beaker or
graduated cylinder


pleas help i have a test towmarrow, and the teacher forgot to write the answer down on our study guide.

2007-09-03 14:48:52 · 5 answers · asked by Anonymous

I am in organic chemistry and we are learning about SP hybridization. I thought I understood it but my professor is talking about different bonds. ie. sigma and pi bonds...

So, can anyone help me understand SP hybridization and how to know when something is SP or SP2 or SP3 hybridized.

thanks...

2007-09-03 14:05:01 · 1 answers · asked by anion 3

How do I find the slope of the tangent line to the graph of y= (x+1)/(x-3) passing through the point (1,5)??
Do I use derivatives? Or is there any other way? How would I use derivatives?

2007-09-03 13:25:44 · 2 answers · asked by Anonymous