Chemistry - August 2007

What is the problem with the cold fusion? Why didn't it work? What is needed to let fusion work?

2007-08-20 17:39:48 · 4 answers · asked by Street Smart 4

why aren't unsaturated fats solid at room temperature?

2007-08-20 17:30:11 · 2 answers · asked by Joe B 2

baked near the center.

2007-08-20 17:29:23 · 2 answers · asked by Anonymous

Can anyone help me with the structural formula of
p-aminobenzene sulforyl guanidine??? i need it for a Reaction mechanism

Thanks!!

2007-08-20 17:27:30 · 2 answers · asked by bichita09 2

Strictly for chemistry research and experimentation is there a way to preserve extracted Dextromethorphan from becoming DXO? Thank you

2007-08-20 17:02:42 · 1 answers · asked by Anonymous

2007-08-20 15:35:58 · 5 answers · asked by george t 1

a. a carbonated soft drink
b. gasoline
c. a solution of ethanol and water

2007-08-20 15:01:10 · 6 answers · asked by Anne 2

I have read plenty of books but it still gets tricky for me. Ionic is when you have a anion and cation together and covalent bonds is when an ion donates more protons than the other ions it is bonding???

i am confused please help.

2007-08-20 13:41:52 · 5 answers · asked by Anonymous

1) NaCl ionic bond
2)NaOH ionic bond
3) CF4 ionic bond
4) CH3Li covalent bond
5) CH2Cl2 covalent bond
6) NaOCH3 covalent bond and ionic bond
7)HCO2Na covalent bond

2007-08-20 13:37:30 · 2 answers · asked by Anonymous

How do you indicate the number of atoms in a covalent compound?

For example, I don't understand these:

NO3 -
Why is it 1(mono)?

PO4 3-
Why is it 3 (tri)?

IO3 -
Why is it 4 (tetra)?

MnO4 -
Why is it 7 (hepta)?

SO3 2-
Why is it 10 (deca)?

Please, PLEASE help!
I have a quiz on this tomorrow.
It was part of my summer homework so I didn't have any instructor teaching me, I was supposed to teach everything to myself but this was the one part I didn't get.

2007-08-20 12:53:42 · 3 answers · asked by sophesticatedsophia 1

Ok, so the bomb i'm talking about is like vinegar and baking soda in a bottle. It's really cool and loud. But I was wondering what similar things you can make with household products. Anyone know of some homemade bombs?

2007-08-20 11:33:20 · 3 answers · asked by Anonymous

Given CH4+4S --> CS2+ 2H2S, what is the theoretical yield of carbon disulfide when 160. grams of methane is reacted with an equal mass of sulfur?

2007-08-20 11:28:15 · 3 answers · asked by Megan 1

does the temprature of an ideal gas increase, decrease or remain the sameduring

a) an iso thermal expansion
b) expansion at constant pressure
c) an adiabatic expansion
d) increase in pressure at constant volume

2007-08-20 10:04:32 · 1 answers · asked by Anonymous

Vapor pressure results from molecules in motion as they leave the liquid surface and become vapor. When molecules leave the liquid surface, how is pressure created?

In other words, how is vapor pressure formed? Where does the force come from?

2007-08-20 09:03:05 · 4 answers · asked by petswodahs 1

Explain it as detailed as possible.

2007-08-20 09:00:07 · 3 answers · asked by petswodahs 1

C3H6 + H2 -- C3H8 Change in H = -124KJ

C3H8 + 5 O2 -- 3 CO2 + 4 H20 Change in H= -2222Kj

H2 + 1/2 O2 -- H20 Change in H = -286KJ

Use to determine the standard enthalpy of combustion of propene::

C3H6 + 9/2 O2 --3 CO2 + 3 H20

2007-08-20 08:58:09 · 1 answers · asked by philip c 1

2007-08-20 08:42:36 · 4 answers · asked by Anonymous

When magnesium is burned in air the magnesium and oxygen combine to produce magnesium oxide. there are 15 grams of magnesium and 5 grams of oxygen. If all of magnesium and oxygen reacted. how many grams of magnesium oxide is produced?

2007-08-20 08:31:50 · 2 answers · asked by Anonymous

When magnesium and oxygen combine to produce magnesium oxid there are 3 grams of magnesium and 1 gram of oxygen of all of the magnesium amd oxygen reacted how many grams of magnesium and oxide are produced?

2007-08-20 07:59:46 · 2 answers · asked by Anonymous

it would be worth 4 marks.. plz help

2007-08-20 07:44:54 · 1 answers · asked by Anonymous

in each of the following define the acid base interaction:
H3O+ (aq) + OH- (aq) --> 2H2O (l)

BF3(g) + NH3 (g) --> F3B - NH3 (s)

2007-08-20 06:30:57 · 1 answers · asked by Anonymous

Who propsed the theory that the elements in a compound do not always combine in the same fixed ratio?

Berthollet

Lavoisier

Proust

Dalton

2007-08-20 06:19:25 · 2 answers · asked by Anonymous

2007-08-20 06:02:19 · 4 answers · asked by goodygood800 1

Who propsed the theory that the elements in a compound do not always combine in the same fixed ratio?

Berthollet

Lavoisier

Proust

Dalton

2007-08-20 05:49:25 · 3 answers · asked by Anonymous

2007-08-20 05:40:47 · 5 answers · asked by Anonymous

2007-08-20 05:39:49 · 2 answers · asked by Anonymous

If an 18 year old responsible and smart person wanted to be in charge of supervising the pressure in a nuclear reactor, could he get the job? I hope so.

2007-08-20 05:39:40 · 9 answers · asked by Anonymous

Calculate the number of moles of CuBr which will dissolve in 0.010M HBr. Ksp for CuBr is 5.3x10-9.

Where do I begin!? Please help. I'm very confused.

2007-08-20 05:38:42 · 2 answers · asked by Anonymous

Methane can be broken down into carbon and hydrogen if 8 grams methane makes 6 grams of carbon how many carbon can 4 grams of methane make?

2007-08-20 05:30:49 · 1 answers · asked by fuffy6yrfy d 1

Plutonium or Uranium

2007-08-20 04:00:46 · 14 answers · asked by Anonymous