Chemistry - September 2007

acetic acid reacts with sodium hydroxide:
HC2H3O2 (aq) + NaOH (aq) --------> H2O (l) + NaC2H3O2 (aq)

If 2.50 mL of vinegar needs 34.9 ml of 0.0960 M NaOH to reach the equivalence point in titration, how many grams of acetic acid are in a 1.00-qt sample of this vinegar?

(what is titration used for exactly?? I have no idea... please help! I have a test in this stuff this week!)

2007-09-09 11:46:31 · 1 answers · asked by iseeduckies 1

Why does ammonia have strong intermolecular attractions ?? Please help me

2007-09-09 10:29:58 · 1 answers · asked by Ice Ice 1

Confusing question I know but it's puzzling me.

What is white gold anyway?

2007-09-09 10:10:51 · 15 answers · asked by Rick G 4

a) once used to fill airships
b)now used in lighter than air balloons
c)called after an planet
d)called after an continent
e)called after an amaerican state
f)called after Albert Einstein
g)called after women who discovered dynamics
h)called after the woman who diacovered the radium
i)called after Dimitri Mendeleev
j)called after an village in scotland

plzz help
plz plz
plz

2007-09-09 09:58:03 · 20 answers · asked by :) 1

a) stored under oil
b)stored under water
c)used as lead in pencil
d)used as the metal in domestic light bulb
e) used as the gas in domestic light bulb

2007-09-09 09:52:42 · 7 answers · asked by :) 1

i have some science homework to find and learn the definitions of some words, one being molecule,
and all the definitions i have already found
(in dictionary/ on internet) are really complicated!

please can someone give me a simpler definition of molecule?
thanks

(ive just started yr10)

2007-09-09 09:43:33 · 2 answers · asked by Anonymous

ALUMINUM (AL)

2007-09-09 09:40:33 · 3 answers · asked by jk 1

1. There are four naturally occurring isotopes of the element Copper. The perent abundance of each is :
^60 Cu= 4.31%
^63 Cu = 83.76%
^65 Cu = 9.55%
^66 Cu = 2.38%

Calculate the average atomis mass of copper: (please show work so i cant figure out how it was done thank you so much!!!)

2. Determine average atomic mass of the following mixtures of isotopes:

A. 80.0 % ^127 I,
17.0 % ^ 126 I,
3.00 % ^128 I

B. 95.00% ^14 N
3.00% ^15 N
2.oo% ^ 16 N

2007-09-09 09:25:34 · 3 answers · asked by Anonymous

Hi, could someone help me with the following:

Which reaction rates are the highest: initial rate, average rate, final rate, or instantaneous rate and why?

Thanks!

2007-09-09 08:57:51 · 2 answers · asked by James 1

If so, could you give me an example and how to seperate it?

Thank you =]

2007-09-09 08:36:58 · 6 answers · asked by Kendra 2

To find the number of moles, do you either use the formula, moles=Mass/M(r)
or
moles=molarity x (volume in Litres)?
any advice would be helpful
thanks

2007-09-09 07:34:56 · 4 answers · asked by Anonymous

2007-09-09 06:21:40 · 4 answers · asked by Kamil n 1

Nitric acid reacts with Barium carbonate

HNO3 + BaCO3 >>>>> ?????

2007-09-09 05:46:51 · 2 answers · asked by Anonymous

2007-09-09 05:08:26 · 3 answers · asked by yanecita65 1

As I'm doing chemistry homework, which includes looking at the electron configuration, I see that Lithium has [He] 2s1. What does it mean?

2007-09-09 04:51:55 · 2 answers · asked by Mizuki K 2

Ethanol into Ethanoic acid.

Like teperature, pressure, whether you need to distil etc.

Thanks

2007-09-09 04:46:07 · 1 answers · asked by C4 Snake 3

j

2007-09-09 04:09:41 · 4 answers · asked by hajira m 1

It's called "ultra," and is very concentrated. When the bottle gets low, I add water to use it all up. The first time I add water, it gets thicker, not thinner. Eventually, when it's almost gone, it acts like one would expect, and gets thinner when I add water. Can someone explain why?

2007-09-09 03:39:19 · 2 answers · asked by auntb93 7

Please answer this question!!!I want to know how to make putty!!!

2007-09-09 01:32:19 · 2 answers · asked by lucario50 2

2007-09-09 00:17:08 · 5 answers · asked by Anonymous

2007-09-08 23:35:09 · 1 answers · asked by Anonymous

2007-09-08 23:26:21 · 1 answers · asked by wateri2003 1

2007-09-08 20:56:10 · 2 answers · asked by Anonymous

Explain how this reaction illustrates the relative basicities of the two oxidation states of lead.

2007-09-08 20:51:59 · 1 answers · asked by Anonymous

2007-09-08 19:07:59 · 2 answers · asked by lolitta 4

Thanks.

2007-09-08 19:03:21 · 1 answers · asked by Boi 1

Like if the compound/substance is composed of at least one metal element, then that substance conducts electricty?

2007-09-08 18:48:55 · 5 answers · asked by Boi 1

What's the pH value of 0.01M of glycine? pKa of glycine is 2.34...

What is the pH if it's 0.1M of glycine?

2007-09-08 18:45:50 · 1 answers · asked by Anonymous

as per above if u can the difference between the oxide and sulfide extraction

2007-09-08 18:19:38 · 1 answers · asked by The MD 2

2007-09-08 17:57:43 · 15 answers · asked by v.anjana 2