Chemistry - July 2007

2007-07-05 07:02:12 · 2 answers · asked by hindol g 1

The melting points of ionic and covalent compounds differ primarily due to:

A. the amount of conductivity
B. the fact that ions have a stable octet
C. a difference in the interparticle forces
D. the greater attraction between covalent molecules

Thanks!

2007-07-05 06:52:39 · 2 answers · asked by Anonymous

In power plants, how does this happen?

2007-07-05 05:51:01 · 4 answers · asked by Anonymous

2007-07-05 05:47:49 · 3 answers · asked by Ethelyn 1

does methanol, ethanol, propanol, butanol and hexanol each have?

2007-07-05 05:45:52 · 3 answers · asked by Anonymous

Science doubt?
my sci fair proj. is
THE EFFECT OF DIFFERENT SOLUTES ON THE TEMPERATURE OF BOILING WATER.
the solutes i have used are :
sugar
salt
rock salt
baking soda
vinegar
eno
citric acid
and
disprin (the tablet)

the variation in the boiling pt is about 94 degrees C - 107 degrees celsius.


there is no drastic change
is that fine
is this project good
are my results valid ?
I AM CONFUSED!
+ i dont have the time to do it all over again or recheck my findings............
i was quite confident untill my frnd told me that THERE ISNT MUCH CHANGE AND THERE SHOULD BE A RISE NOT A FALL..............



I"M CONFUSED

2007-07-05 05:39:12 · 7 answers · asked by Anonymous

my sci fair proj. is
THE EFFECT OF DIFFERENT SOLUTES ON THE TEMPERATURE OF BOILING WATER.
the solutes i have used are :
sugar
salt
rock salt
baking soda
vinegar
eno
citric acid
and
disprin (the tablet)

the variation in the boiling pt is about 94 degrees C - 107 degrees celsius.


there is no drastic change
is that fine
is this project good
are my results valid ?
I AM CONFUSED!

2007-07-05 05:28:55 · 5 answers · asked by Anonymous

2007-07-05 05:23:46 · 7 answers · asked by Anonymous

2007-07-05 05:06:30 · 5 answers · asked by pudderboy2002 1

2007-07-05 04:55:46 · 3 answers · asked by tovi 1

2007-07-05 04:53:52 · 4 answers · asked by stewcat123 1

in a series of rxns all C atmos are converted to gas C4H6 with efficiency 80%. how much C4H6 is prepared from 1000 ltr of natural gas at 10 atm pressure and 400K temp?

2007-07-05 04:50:17 · 3 answers · asked by Secret L 1

Back in the 60's they were very popular. Why have they become so unpopular?

2007-07-05 04:22:37 · 4 answers · asked by Anonymous

I was trying to purchase or find free software that allows you to practice solving reaction problems or also allows you to review and practice important organic chemistry concepts. Software similar I guess you would say to the Jump Start they have available for younger children.

2007-07-05 04:02:56 · 2 answers · asked by Anonymous

Are there any two chemicals (that I could expect to reasonably buy) that when mixed together, get cold? I know there are lots that get hot - I want the opposite.

2007-07-05 03:56:45 · 3 answers · asked by Anonymous

2007-07-05 03:55:17 · 1 answers · asked by chsh 1

Mendeleev gave his periodic table in 1860.He corrected the atomic mass of Be from 13.5 to 9.But Newland in his arangement of elements according to Law of Octaves placed Be between Li(7) and Br,though at that time Be's at.mass was taken to be 13.5.Therefore it should have been between C(12) and N.

2007-07-05 02:53:16 · 2 answers · asked by tomykudilil 1

wire gauze
triple beam balance
stirring rod
evaporating dish
tripod
rubber stopper
cork
cork borer
graduated cylinder
test tube
hard glass test tube
glass tubing
rubber tubing
mortar and pestle
bunsen burner
bunsen clamps
clamp holders
beaker
filter paper

2007-07-05 02:15:15 · 4 answers · asked by keishlets 1

2007-07-05 02:13:01 · 5 answers · asked by rossana l 1

A mixture of 2g of CH4 and 1.65g of Si2H6, both gases, are placed in a flask. The total pressure exerted by this mixture is 102kPa. What is the partial pressure?

Any ideas?

2007-07-05 01:36:59 · 5 answers · asked by Anonymous

Why does a small droplet of water dry quicker than a larger globule of water???

2007-07-04 21:16:15 · 7 answers · asked by Anonymous

2007-07-04 20:33:40 · 1 answers · asked by jack_hock2003 1

what is the difference between endothermic and exothermic!!!!
rxn...
thank you
thank you
thank you!!!!

2007-07-04 18:04:42 · 2 answers · asked by Anonymous

2007-07-04 17:32:47 · 3 answers · asked by formystudies6 1

2007-07-04 15:05:23 · 3 answers · asked by Anonymous

Each of the following are soluble in water except

BaCl2
Mg(CH3COO)2
(NH4)3PO4
FeS

2007-07-04 15:03:28 · 4 answers · asked by Anonymous

According to the solubility rules, Al2(SO4)3 is soluble in water. When it dissolves, what is the charge on the aluminum ion?

2007-07-04 15:02:28 · 2 answers · asked by Anonymous

2007-07-04 15:01:50 · 1 answers · asked by Anonymous

I love science a lot, but I haven't been able to figure this one out. Why on earth would hydrogen, (a combustable element) and oxygen (An element fire needs) chemically create a compound that does the exact opposite. I know it's a new chemical, and isn't neither hydrogen or oxygen anymore, but still... always bothered me.

2007-07-04 12:14:23 · 8 answers · asked by 4RealLove 2

I hear primordal soup was where life started. What is this mix and can it be duplicated in the lab and will life start again? Is this testable or pure speculation?

2007-07-04 11:18:56 · 5 answers · asked by james h 2