Chemistry - October 2006

2006-10-23 06:32:03 · 2 answers · asked by ibid 3

can you please help me found the destiny of emerald

2006-10-23 06:20:18 · 2 answers · asked by Rachelle S 1

2006-10-23 06:18:39 · 11 answers · asked by Anonymous

2006-10-23 05:37:17 · 2 answers · asked by g s 1

I want to make a handle out of what ever material that it is. If it does not fully eliminate the heat fine, just aslong as it really lowers it.

2006-10-23 05:14:54 · 4 answers · asked by snowteller 3

The question is; "Draw the structure of the oxime derived from ethanal. Suggest why the oxime and semicarbazone of ethanal are solids whereas the aldehyde is liquid."

So far I have the structure of the oxime of ethanal to be CH3CH=NR' but I have no idea what a semicarbazone is (not in my textbook)Can anyone please help me ! :)

2006-10-23 05:06:30 · 4 answers · asked by Showaddywaddy 5

mainly what ingriedients should i use?

2006-10-23 04:58:27 · 3 answers · asked by Bliss 1

2006-10-23 04:45:39 · 3 answers · asked by baby_caramel726 2

i'm in class right now, and woul like to know the answer

2006-10-23 04:43:36 · 6 answers · asked by Anonymous

Is it

A) J
B) J·mol–1
C) J·mol–1·K–1
D) J·K·mol–1

I think its C, but im not sure if the mol are in the denom or not..

2006-10-23 04:40:54 · 5 answers · asked by axcryingxshame 1

Intestinal gas is methane and methane gas is lighter than air. With these 2 truths in place, how many/much beans would a normal, 150 pound person have to eat to show measurable weight loss after passing gas?

2006-10-23 04:26:13 · 8 answers · asked by Stephen C 3

Im looking for Science Fair ideas, and I heard that you can find the date of when a painting is created to know if its fraud or not.

2006-10-23 03:42:54 · 4 answers · asked by Clemence 2

2006-10-23 03:37:39 · 3 answers · asked by Anonymous

I know how to do some simple charges like

NH4+ & NO3- = NH4 NO3 (charges cancel because you have on positive and one negative)

Would copper phosphate be Cu3(PO4)2?

i'm not even sure if i wrote the name for that write..is it supposed to be copper(II)phosphate?

2006-10-23 03:07:29 · 4 answers · asked by Julio 4

2006-10-23 02:53:45 · 1 answers · asked by Donna G 1

what factors(and explanation) that make any difference in velocity of reaction?

2006-10-23 02:37:20 · 2 answers · asked by Andrew S 1

2006-10-23 02:36:24 · 4 answers · asked by Donna G 1

H2O+NaSO3+SO2->2NaHSO3
3Cu+8HNO3-->3Cu(NO3)2+NO+4H20
2AgNO3+Cu-->Cu(NO3)2+2Ag
Ca(CO3)+2HCl-->Mn Cl2+Cl2+2H2O

2006-10-23 02:31:21 · 1 answers · asked by coolpuffin 2

2006-10-23 01:47:28 · 4 answers · asked by latha p 1

My son has asked for help with his chemistry and I have no idea what to do. It was never one of my strong points at school so I was wondering if someone could help me with these, in as basic a way as you can because I really am terrible lol.

Q: Balance the following equations if necessary and write them as ionic equations.

a) HCl(aq) + NaOH(aq) --> NaCl(aq) + H2O(l)

b) HNO3(aq) + Mg(OH)2(aq) --> Mg(NO3)2(aq) + H2O(l)

c) LiCl(aq) + AgNO3(aq) --> AgCl(s) + LiNO3(aq)

d) H2SO4(aq) + LiOH(aq) --> Li2SO4(aq) + H2O(l)

e) Pb(NO3)2(aq) + KCl(aq) --> KNO3(aq) + PbCl2(s)


It's been several years since I took chemistry at school and I can't even remember what half of these symbols stand for so i'm not much help to my son unfortunately. Any help would be very mmuch appreciated. Thank You.

2006-10-23 01:17:21 · 8 answers · asked by Anonymous

If an inverted glass jar is put over a burning candle, resting in a shallow bowl of water, the candle
burns for a few seconds longer and then goes out. Explain what happens to the water level inside
the jar, together with the reasons for this behaviour.

2006-10-23 00:48:14 · 7 answers · asked by alan_warr 2

I'm on the last question for my homework and I don't get how to do it, here it is...

An unknown element named Renegadium (Rg) consists of four isotopes Rg (A) mass # 281, Rg (B) mass # 282, Rg (C) mass # 283, Rg (D) mass #284. Isotopes C has a percentage abundance of 2.00%. Isotopes A and D have the same percentage abundance. Calculate the percent abundance of A, B and D.

2006-10-23 00:34:10 · 4 answers · asked by Silentspeedster 2

2006-10-23 00:17:38 · 5 answers · asked by luc_bugeja 1

could u also write a website describing it, best and most detailed answer gets 10 pts

2006-10-22 23:57:08 · 2 answers · asked by Anonymous

na-cl seperation is 4.26kC/mol length of na-cl=.236

k-cl seperation is 4.43 length of k-cl=.267

2006-10-22 23:19:49 · 1 answers · asked by djaioubi 1

2006-10-22 22:57:11 · 8 answers · asked by silentgal.. 2

and compounds that are green.

one more question,
cobalt (in a free element) is it blue or metalic colour?
I have seen a metalic grey cobalt, but some books mention that cobalt is blue.

2006-10-22 22:10:03 · 6 answers · asked by Papilio paris 5

Given [Ar] 4s2 4p, calculate the first ionization energy.

2006-10-22 20:29:44 · 3 answers · asked by annie 1

(Ka= 4.9 x 10^-10 for HCN)

2006-10-22 19:15:52 · 4 answers · asked by fweakiass 1

plz don't reply with a joke

2006-10-22 18:54:19 · 4 answers · asked by haruls 1