Chemistry - October 2006

How to Write a reaction equation for 'Quantitative Determination of Vitamin C' using a raw cabbage and DCPIP.

2006-10-08 00:41:17 · 2 answers · asked by Mogobadi 1

the original cotton fabric was dyed for brilliant optic white colour.The same was subsequently changed to light pale cream.while the shade was visually matching inside the room,when compared in the sun light,the bright whiteness could not be masked & is predominant.So,how to proceed with the sequence of redyeing & the type of dye to be used, to get pale cream colour,in sun light also.

2006-10-07 22:59:10 · 3 answers · asked by Jayanthy R 2

2006-10-07 21:48:38 · 6 answers · asked by Anonymous

2006-10-07 20:54:45 · 1 answers · asked by SmoOth 1

2006-10-07 20:52:06 · 1 answers · asked by SmoOth 1

2006-10-07 20:37:20 · 3 answers · asked by SmoOth 1

2006-10-07 20:35:56 · 1 answers · asked by SmoOth 1

I'm having problem with this question... Hopefully someone can help? It goes like this:

A particular uranium alloy has a density of 18.75 g/cm^3. What volume if occupied by a critical mass of 49 kg of this alloy? [I calculated 2613.3 cm^3.] The critical mass can be decreased to 16kg if the alloy is surrounded by a layer of natural uranium (which acts as a neutron reflector). What is the volume of the smaller mass?

Actually, I'm a little confused here as to whether the density of the alloy changes when it is surrounded by a neutron reflector. Can anyone help me? Thanks.

2006-10-07 20:25:01 · 3 answers · asked by silverwhiskers 2

How do I go about finding the mass of precipitate that forms from a solution mixture? All I'm given is the volume, molarity, and formula for two elements.

2006-10-07 20:14:05 · 4 answers · asked by Jason He 2

While reading an article on the adsorbtion and desorbtion of Pu in clay based sediments, the article mentioned that Pu-241 demonstrated an alpha decay. The article then discounted the presence of Am-241 parented by Pu-241, suggesting a beta-minus decay.
A quick internet search found reference to both alpha and beta-minus decays, but not suggesting both.
So which is it?

Ken

2006-10-07 19:48:33 · 3 answers · asked by Ken B 3

2006-10-07 19:45:44 · 5 answers · asked by adi 1

heard this somewhere, not sure if i spelt cesium right but its a substance that when put in water causes an explosion. all answers appreciated thanks.

2006-10-07 19:36:25 · 3 answers · asked by Anonymous

2006-10-07 19:01:27 · 1 answers · asked by Zai 2

Mg(g)+2HCI(aq)= MgCl2(aq)+H2(g)

2006-10-07 18:10:36 · 6 answers · asked by Anonymous

which has the higher concentration of Cl ion:

0.2 M CaCl2 or 0.3 M KCl

I'd appreciate it if you tell me why. I'm confused about it and how to find out. thanks!

2006-10-07 18:08:24 · 4 answers · asked by blue_bee 4

2006-10-07 17:35:41 · 2 answers · asked by ic3_cloud 1

names like polygon etc

2006-10-07 16:10:05 · 6 answers · asked by ej 2

2006-10-07 16:09:36 · 10 answers · asked by Anonymous

k im almost done w/ this essay about mercury so could u help me w/ these 3 topic that i hav left!!!

1. properties of the element
2. makeup of the element
3. where it can be found and who found it first!

and when i say where its found i mean like natural or pure or however u discribe it but u get what i mean! i hope???

thanks thanks thanks!?!?!?!?!??

2006-10-07 16:03:37 · 4 answers · asked by degrassi_27 2

hard to imagine...

2006-10-07 15:33:47 · 5 answers · asked by Anonymous

My sister and her husband milk cows for a living.They had a water test done today,and chloroform was found in the water.If the problem isnt taken care of,they are droped down to grade D.What causes this?And how can it be taken care of?Iv looked it up on the web but didnt find any real answers.Any help is appricated.Thanks in advance!

2006-10-07 15:22:33 · 5 answers · asked by tim'slove 3

What is a chain reaction?What happnes and how is a chain reaction in a nuclear ractor controlled?

2006-10-07 15:20:03 · 5 answers · asked by Anonymous

2006-10-07 15:12:02 · 6 answers · asked by Mogelaw 1

Does solid gallium expand or contract when it is melted?

What is the change in volume when 5.00 mL (cm3) of solid gallium is melted?

2006-10-07 14:36:17 · 1 answers · asked by jrgotafathead 1

what is it based on?

2006-10-07 14:36:06 · 4 answers · asked by sara a 1

2006-10-07 14:24:31 · 2 answers · asked by sara a 1

What particle is unaffected by magnetic fields?

2006-10-07 14:07:21 · 5 answers · asked by Anonymous

2006-10-07 12:48:04 · 5 answers · asked by Anonymous

2006-10-07 12:39:35 · 10 answers · asked by Anonymous

2006-10-07 12:28:55 · 3 answers · asked by Anonymous