Chemistry - May 2007

How many moles of water, can be produced from the reaction of 16 grams of methane with an unlimited supply of oxygen? How many grams of water is this? The reaction is:
CH4 +2 O2 --> CO2 +2 H2O

2007-05-03 05:36:13 · 2 answers · asked by Melissa H 1

2007-05-03 02:48:12 · 9 answers · asked by Razima 1

Give at least 3 answers. Thanks.

2007-05-03 01:28:58 · 7 answers · asked by yahooanswers 3

a hardness titration was done (3 times) water sample was 5 mL
EDTA used to titrate. molarity of EDTA is 0.0100M. volume of EDTA used was 3.2,3.2,2.4

2007-05-03 00:00:05 · 2 answers · asked by kaz l 2

2007-05-02 23:31:14 · 1 answers · asked by Anonymous

I can't figure out how to balance this one. Does anyone know?
H3AsO4------> AsH3 + H20

Thanks

2007-05-02 23:25:50 · 1 answers · asked by Blossom 1

What is the atomic mass of the isotope?

2007-05-02 22:08:17 · 2 answers · asked by Anonymous

2007-05-02 22:03:07 · 1 answers · asked by Anonymous

2007-05-02 20:53:38 · 5 answers · asked by John 1

Can you please check to see if these are right:
Thank you!

P=POLAR
NP= NONPOLAR

SF4 -POLAR
XeF4 -NONPOLAR
XeF2 -P
FNO2 -P
NH2− -NP
PF5 -NP
SiF6-2 -NP
SiF5− -NP
NO3− -P
CH4 -NP
NH3 -P
H2O -P
C2H2 -NP
N2F2 -P
N2F4 -NP
C2H2Cl2 -NP
NO2− -P
CH2Cl2 -NP
C2H4 -NP
CS2 -NP
N02- -NP
BF4- -NP
TeCl4 -P
XeF4 -NP
C2H6O -NP

2007-05-02 20:28:41 · 2 answers · asked by Jay 2

Methyl alcohol (wood alcohol), CH3OH, is produced via the reaction
CO + 2H2 -> CH3OH
A mixture of 1.20 g H2 and 7.45 g CO are allowed to react.

(a) What reagent is the limiting reagent?

(b) What is the gram yield of CH3OH?

(c) How much of the reagent present in excess is left over?

(d) Suppose the actual yield is 7.52g of CH3OH. What is the % yield?

2007-05-02 20:02:46 · 2 answers · asked by Joesph P 1

Is this true for free radical intermediates? Can you cite a source also?

2007-05-02 19:48:34 · 5 answers · asked by sweetandlow16530 1

.........?

2007-05-02 19:21:09 · 1 answers · asked by Anonymous

The kind that detects bases and acids

2007-05-02 19:15:01 · 2 answers · asked by icemage_666 1

i know its
K[A]^1 and
K[B]^2 and

the rate law is K[A][B]^2

but i need to know why that it, please be detalistic and specific as possible

2007-05-02 18:33:45 · 3 answers · asked by Anonymous

Acid is not harmfull to aluminum.

2007-05-02 18:08:44 · 2 answers · asked by digish c 1

I can set it up on the formula but im having trouble solving it, show me how to solve it please.

2007-05-02 18:07:53 · 3 answers · asked by Oscar 1

In my distillation experiment, we isolated hexane and toluene, GC analysis was run and from the results, I am too determine the %composition of the two analytes in mixture. I am supposed to "correct the area of the peak" by dividing by the response factor--what values do I use?

2007-05-02 17:57:34 · 2 answers · asked by Anonymous

in the chapter electrochemistry... i learnt that ions in the lower position of the electrochemical series will be discharged. but if the concentration of another ion is high, then the ions will be discharge. e.g. concentration lead(ll) sulphate solution. Pb2+ will be discharged althouh H+ is lower than Pb2+. then how about dilute copper(ll) suphate solution? the H+ is more concentrated and Cu2+ is diluted but Cu2+ is lower than H+. which ion will be discharged first? Cu2+ or H+?

2007-05-02 17:41:16 · 2 answers · asked by Anonymous

I just read an article about plastic containers and how they tend to give off substances if food touches them.
Where can I read more on that?
Lists of plastics that are dangerous, where they are used, what is made from them, what their abbreviations are, etc.?

2007-05-02 17:20:25 · 2 answers · asked by Tahini Classic 7

what is the scientific notation for this number373059360.7

2007-05-02 17:16:01 · 1 answers · asked by Anonymous

My final is tomorrow so I am freaking out! Anyway I I need to set this up as an Empirical formula:
When 1.00g of metallic Chromium is heated with element Chlorine gas, 3.045g of chromium salt results. Thank you!

2007-05-02 16:55:21 · 4 answers · asked by Anonymous

2007-05-02 16:45:37 · 1 answers · asked by Anonymous

if sulfur dissolves in hot alcohol, why is this so? pls help

2007-05-02 16:34:33 · 3 answers · asked by Anonymous

Thanks

2007-05-02 16:34:04 · 6 answers · asked by mathew s 1

I need a list of some water-soluble emulsifiers.

The only thing is that they CANNOT be Polysorbates.

Thanks.

2007-05-02 16:13:25 · 1 answers · asked by Think. 3

i've got solid form of calcium carbonate mix with calcium fluoride how can i get the amount of calcium carbonate from my mixture?

2007-05-02 16:12:04 · 2 answers · asked by frostth 1

(A) No because one is a metal and the other is a nonmetal.
(B) Yes because both are metals.
(C) Yes because one lacks an electron to fill its valence shell and the other has only one electron in its valence shell.
(D) none of these.

2007-05-02 15:54:25 · 5 answers · asked by BB 1

Hi, I have my practical exam coming up next and I'm wondering what examples are suitable for preparing for the following question:


Question 4 - Plan an experiment to determine the percentage by mass of an ion in a given compound


I only know one experiment which was the iodometric determination of copper in brass.....

If you could provide me with some suitale examples I'll be very very grateful. Thanks!

2007-05-02 15:45:09 · 1 answers · asked by Anonymous

2007-05-02 15:29:10 · 1 answers · asked by screechrogers 1