Chemistry - October 2006

2006-10-09 19:42:52 · 3 answers · asked by Chemist 1

2006-10-09 17:53:10 · 5 answers · asked by praj 1

chemistry lab

2006-10-09 17:12:06 · 1 answers · asked by cherryblssm8 1

can somone point out which of these are no reaction and which is a complex ion? Its for a lab where I nee to identify mystery reactants but I'm not sure about thes equations.

(NH4)2CO3 + NaOH
(NH4)2CO3 +HNO3
(NH4)2CO3 +KI
(NH4)2CO3+ Na2S
(NH4)2CO3+ BaCl
(NH4)2CO3 + Pb(NO3)2
(NH4)2CO3+ Fe(NO3)3
(NaOH) + KI
(NaOH) + HNO3
(NaOH) + Na2s
(NaOH) + BaCl2
(NaOH) + Fe(No3)3
(NaOH) + Pb(NO3)2
HNO3 + KI
HNO3 + Na2S
HNO3 + BaCl2
HNO3 + Pb(NO3)2
HNO3 + Fe(NO3)3
KI + Na2S
KI + BaCl2
KI + Pb(NO3)2
KI + Fe(NO3)3
Na2S + BaCl
Na2S + Pb(NO3)2
Na2S + Fe(NO3)3
BaCl2 + Pb(NO3)2
BaCl2 + Fe(NO3)3
Pb(NO3) + Fe(NO3)3

2006-10-09 17:09:32 · 1 answers · asked by spiffo 3

2006-10-09 15:50:37 · 8 answers · asked by manu 1

I need some help with a chemistry problem. Please help!

2006-10-09 15:45:26 · 2 answers · asked by Anonymous

2006-10-09 15:41:55 · 7 answers · asked by Royce R 1

In our Flame test it contained cholride ions and metals ions How do I know that the metal Ions are the ones that made the color change and not the cholride?

2006-10-09 15:36:43 · 4 answers · asked by Anonymous

2006-10-09 15:36:00 · 1 answers · asked by fataneh78 1

2006-10-09 15:27:36 · 2 answers · asked by fataneh78 1

what is their drug interaction?

2006-10-09 15:21:48 · 0 answers · asked by fataneh78 1

calculate the number of moles of gas contained in each of the volumes.. The volumes measured at STP

1.48 dm3 of oxygen gas, o2

2. 12 dm3 of ammonia NH3

3.240 cm3 of bromine gas Br2

4.96 cm of neon gas.

2006-10-09 15:19:29 · 4 answers · asked by Danger! 3

I need help on my chemistry hw... this is about Sodium Clorides Discorery ... Who WHAT when and where about the discovery of sodium clordie on the periodic table

2006-10-09 15:14:56 · 4 answers · asked by YouKnoiT 2

what physical property of iron might provide a unique way to separate it from a mixture?

2006-10-09 14:36:46 · 4 answers · asked by NONE N 1

hey
i have to do a report on the element cobalt. i would like to do it myself. could anyone post a link to a website that has a lot of information about the element cobalt (please do not write the information in the post, link to a website and not wikipedia). Thank you so much.

2006-10-09 14:24:33 · 3 answers · asked by binsch02 2

A) .21 mol of NaCl
B) 23.7 g of Ba(OH)2 * 8 H2O
C) 1.63 x 10^20 formula units of LiCl
D) .342 mol of K2HPO4

2006-10-09 14:07:16 · 1 answers · asked by ttu95463 1

the horizontal rows are called _______. there are seven ________ and within the ________, the chemical properties of the elements repeat themselves periodically across the table
i really need some help with this

2006-10-09 13:38:25 · 6 answers · asked by Anonymous

What physical properties of liquids might be useful to separate them?

2006-10-09 13:28:52 · 10 answers · asked by NONE N 1

for example, this two elements called lanthanide and actinide series appear in periodic table

2006-10-09 13:26:09 · 5 answers · asked by Anonymous

Ok so I have this paragraph or 2 to write for school tomorrow, and I've researched tons and I can't find a thing on it. Here's the question

We have to write about one substance that hardens when exposed to high temperatures, such as cement, clay (can't use that one, it was the example), cookie dough, mud, ect. We have to explain why it has these properties that allow it to harden, rather then soften and melt such as butter and chocolate.


Can someone PLEEEEASE help me?!

2006-10-09 13:24:16 · 3 answers · asked by Anonymous

A metal object with a mass of 19g is heated to 96C (degrees centigrade), then transferred to a calorimeter containing 75g of water at 18C. The water and metal object reach a final temperature of 22C.

a)What is the specific heat of the metal in cal/gC and in J/gC?

b) What is the metal?

I have this question on my study guide and it's not a turn in question for chemistry. The formula for specific heat is

Specific Heat (SH=heat/mass x difference temperature)

2006-10-09 13:22:43 · 2 answers · asked by MzzandtheChuchuBees 5

2006-10-09 13:16:57 · 5 answers · asked by s a 1

Also what was his key roles that chemist still use in science today?

2006-10-09 13:13:28 · 4 answers · asked by mcsquare3245 2

I think that Dodecahedrane and Buckminster Fullerene are among some of the most exotic and interesting.

Pictures here:
http://images.google.com/images?q=dodecahedrane&hl=en
for Dodecahedrane

Buckminster Fullerene here:
http://images.google.com/images?svnum=10&hl=en&lr=&safe=active&q=buckminster+fullerene

Churchane is pretty interesting too, just one picture :(
http://images.google.com/images?svnum=10&hl=en&lr=&safe=active&q=churchane

Thanks!

2006-10-09 12:56:13 · 5 answers · asked by Anonymous

2006-10-09 12:48:24 · 3 answers · asked by Emily 2

......is stronger than a double bond between two oxygen atoms

2006-10-09 12:39:04 · 3 answers · asked by Emily 2

this can be a simple answer...it doesnt have to be too detailed

2006-10-09 12:32:24 · 5 answers · asked by Emily 2

Before I start, I'd like to say that I have my teacher's pemission to use outside resource, and that it will be cited in my homework assignment. Our assignment in chemistry class is to figure out what two substances went into this reaction based on observations. Two beakers sat in front of us, one was filled with white granules, very similar to sugar. The other was a transparent liquid, no odor, and looked no different than water. When the two were combined, the compound turned bright yellow, then orange, red, brown, black, and upon turning black emitted a thick burst of gas. The compound began to rise, and continued rising outside of the beaker until it had formed a two foot high cylinder. It was black, and filled with small holes. Our teacher informed us the beaker was very hot. I am trying to figure out what two chemicals went into this compound- what do you believe they are?

2006-10-09 12:25:11 · 3 answers · asked by fslcaptain737 4

2006-10-09 12:19:03 · 6 answers · asked by sprivxd3 2

actually i have to find the concentration of iodine in starch solution bycalibration curve

2006-10-09 12:15:00 · 2 answers · asked by s a 1