Chemistry - December 2006

For the reaction AgNO3 (aq) + KBr(aq) -->

which compound will precipitate?

Enter an answer in the form, for example, NaNO2 for NaNO2

2006-12-02 04:22:41 · 2 answers · asked by sunyrob 1

How does pH affect stain removal.
How do oxidizing agents/reducing agents facilitate stain removal
How are enzymes employed in stain removal.
if a tree falls on me in the forest, do I make a sound?

2006-12-02 03:55:52 · 1 answers · asked by satisfaction 2

This is for HW. If you aren't comfortable giving me the answer, please give me a source!! If you do give me an answer, give me a source anyway! Thank you so much ahead of time!!

2006-12-02 03:35:44 · 5 answers · asked by Wondering 1

2006-12-02 03:33:56 · 3 answers · asked by Anonymous

Can someone answer these questions for me??

Which trend decreases as you move up a group and across a period from left to right?
atomic nucleus
electronegativity
ionization energy
atomic radius


Which trend decreases for metals down a group?

atomic radius
reactivity
melting point
None of the above are correct.




Which of the following is least reactive?

gallium
chromium
calcium
potassium

The melting point for metals generally _______ as you go down a group.
increases
stays the same
decreases
gets all wiggly


The atomic radius is generally ______ than the ionic radius of a Non-Metal.

smaller
larger
the same
None of the choices are correct.



Atomic size generally _______ as you go down a group.

decreases
stays the same
increases
All of the above.

On the periodic table, protons increase:

bottom to top.
left to right.
right to left.
There is no pattern

2006-12-02 03:32:32 · 4 answers · asked by queenpravato 1

URGENT: Carbon dioxide is 1 1/2 times denser than air and slightly soluble in water. Anhydrous copper sulphate is white but turns blue if any water or water vapour is present. Carbon dioxide is given off when a metal carbonate reacts with dilute acid. Describe 2 different experimental routes to obtain test tubes full of pure,dry carbon dioxide gas

2006-12-02 03:22:49 · 1 answers · asked by sparklindiamondsatine 5

2006-12-02 02:50:23 · 2 answers · asked by Char 2

2006-12-02 02:29:27 · 8 answers · asked by Anonymous

can anyone help me?

2006-12-02 02:22:06 · 2 answers · asked by shy one 2

2006-12-02 02:17:45 · 3 answers · asked by Iswarya G 1

2006-12-02 02:12:07 · 5 answers · asked by pss4dm 1

35mmhg- what does mmhg stand for

2006-12-02 02:04:56 · 1 answers · asked by pss4dm 1

What would its properties be and what would its uses be?

2006-12-02 01:45:02 · 9 answers · asked by Jack 2

The molar enthalpy of fusion (Delta)H degrees) of ammonia is 5.65 kJ/mol, and the molar entropy of fusion (Delta)S degrees) of ammonia is 28.9 J/mol K. Calculate (Delta) G degres at 25 degrees C. for the melting of 60.0 moles of ammonia. (Enter your answer in kJ).

Using this information, calculate the freezing point of ammonia. (Enter your answer in K).

2006-12-02 01:29:52 · 1 answers · asked by Anonymous

2006-12-02 01:19:18 · 2 answers · asked by nermeen a 1

I need to know how acid rain is formed, i'm writing an essay and cant find a clear version of the chemical equations used in the formation of acid rain.

2006-12-02 01:08:47 · 11 answers · asked by Anonymous

Im looking for a way of extracting sulphur, however the way must simple as Im not allowed to use a lab. Also it has to come from a natural resource (preferably found around malaysia)

2006-12-02 01:06:06 · 2 answers · asked by bovezuk 2

2006-12-02 00:57:51 · 3 answers · asked by cherokee_3 c 1

2006-12-02 00:42:06 · 6 answers · asked by keloa 1

2006-12-02 00:28:48 · 4 answers · asked by Biggs 1

Is the oxidizing number most important factor here? Like the first one having an o. number of +6 and second one having an o. number of +7.
Are those compounds powerful oxidizing agents which have greater oxidizing number?

2006-12-02 00:13:43 · 8 answers · asked by School Project 2

42.35% Na, 16.59% B, 44.00% O ?
32.61% Na, 36.48% B, 30.91% O ?
22.9% Na, 21.5% B, 55.7% O ?
46.2% Na, 21.7% B, 32.1% O ?
22.85% Na, 21.49% B, 55.66% O ?

2006-12-01 23:38:43 · 5 answers · asked by ? 3

3.72 x 10-24 atoms Fe ?
1.347 x 1024 atoms Fe ?
2.69 x 1023 atoms Fe ?
4.20 x 1027 atoms Fe ?
1.35 x 1024 atoms Fe ?

2006-12-01 23:36:50 · 5 answers · asked by ? 3

0.2327 g N2 ? 0.1163 g N2 ?
4.30 g N2 ? 0.2325 g N2 ?
or 0.233 g N2 ?

2006-12-01 23:34:51 · 3 answers · asked by ? 3

I'm doing a environmental case studies assignment for waste recovery from cheese whey. Can anyone ask my question in detail e.g. the advantages/disadvantages UF has over RO? Thanks a million in advance!

2006-12-01 22:55:14 · 1 answers · asked by limck_dcp_cls 2

2006-12-01 22:39:40 · 4 answers · asked by Anonymous

2006-12-01 22:20:50 · 4 answers · asked by muthu r 1

2006-12-01 22:04:32 · 3 answers · asked by Anonymous

2006-12-01 21:58:33 · 6 answers · asked by kim c 1

2006-12-01 21:58:00 · 2 answers · asked by pete 2