Chemistry - March 2007

I'm sixteen. Please suggest me a good site from where i can get some reading material along with illustrated diagrams and animations on the topic-packing in crytalline solids.

2007-03-31 23:43:53 · 3 answers · asked by meetan 1

2007-03-31 20:49:53 · 11 answers · asked by eliza1988_msu 1

2007-03-31 20:48:20 · 2 answers · asked by Anonymous

is it Cl3O6?

2007-03-31 20:37:24 · 2 answers · asked by Zapking 2

The enthalpy change for the conversion of white phosphorus to red phosphorus is -17.6 kJ/mol. Which of these gives off more heat when burned in air?
one mole of white phosphorus
one mole of red phosphorus

2007-03-31 20:26:38 · 1 answers · asked by smile 1

EMERGENCY!!!! Please help as soon as possible.


Elemental analysis indicates the simplest formula of an unknown is C2H4O. When 0.775 gm of the compound is dissolved in 50gm of Benzene (C6H6), the solution freezes at 5.06˚C. What are the molecular weight and molecular formula of the compound? The freezing point of pure Benzene is 5.48˚C, and its Ksubf is 5.12˚C/m.

2007-03-31 19:31:02 · 3 answers · asked by smarterchild_usa 1

2007-03-31 19:01:03 · 3 answers · asked by sochn9022jkl 1

A - [Ar]4s24d4
B- [Ar]4s24p63d3
C [Ar]4s23d7
D [Ar]4s23d9
E [Ar]4s13d10

WHICH ONE IS CORRECT? MANY THANKS!

2007-03-31 18:58:42 · 3 answers · asked by Anonymous

2Cp(aq) /=\ Cp2(aq)+heat
a This is an exothermic reaction.
b By Le Châtelier’s principle, a change in temperature is a
stress. By increasing the amount of heat, Keq is lowered.
c Cp is more stable than Cp2 at any given temperature.
d When the equilibrium shifts to the left (reactant), the
reaction absorbs heat.

2007-03-31 18:51:58 · 3 answers · asked by Blade L 1

pls help! another chemistry!

2007-03-31 18:51:35 · 1 answers · asked by Anonymous

Why, when acetone is set to evaporate and the temperature is recorded, does the temperature decrease to about 5 deg. C. and then increase again as time goes on? Any help would be awesome!

2007-03-31 18:50:07 · 2 answers · asked by Anonymous

A. Hydrogen bonded to a less electronegative metal
B. Hydrogen bonded to a more electronegative metal
C. Hydroxide bonded to a less electronegative metal
D. Hydroxide bonded to a less electronegative metal

2007-03-31 18:47:09 · 5 answers · asked by Blade L 1

I learnt that ethers are basic according to the electronic concept? How is that? Please explain in simple terms.

2007-03-31 17:53:19 · 2 answers · asked by Anonymous

A balloon filled with 24.9 mol helium has a volume of 558. L at 0.0°C and 1.00 atm pressure. The temperature of the balloon is increased to 33.0°C as it expands to a volume of 625. L, the pressure remaining constant. Calculate q, w, and E for the helium in the balloon. (The molar heat capacity for helium gas is 20.8 J/°Cmol.)

2007-03-31 17:32:06 · 1 answers · asked by smile 1

Are gasses in closed containers affected by gravity

2007-03-31 17:14:35 · 1 answers · asked by thejimmy 1

2007-03-31 16:53:15 · 2 answers · asked by besho 1

Can someone explain how to name shapes (ex: trigonal planar, trigonal pyramidal, octahedral, V shaped bent)
for molecules?)

Like ClF3 or SO2 or OF2?
(This is for gr12 chemistry)

2007-03-31 16:44:25 · 4 answers · asked by Anonymous

2007-03-31 16:30:36 · 3 answers · asked by Anonymous

What is the chemical formulas for sodium dichloros triazinetrione dihydrate and triethylene glycol?

2007-03-31 15:57:58 · 3 answers · asked by Solari 1

This is a question on my chem hw and i was just wondering how i would find out this answer. Can someone please explain what an isomer is and how it relates to these molecules? thanks

2007-03-31 15:20:19 · 2 answers · asked by Kiwi 1

I am doing a school report and I am having a hard time find interesting facts about. If you do answer, please do not put anything about how chlorine is used in pools, because everyone knows that. If you have sources that would be fabulous.

2007-03-31 14:53:02 · 7 answers · asked by Me 2

A characteristic of gases is that they spread throughout the space available to them

2007-03-31 14:44:54 · 2 answers · asked by Anonymous

Write the word equation form of the net ionic equation for all neutralizaton equations ?


thanks for the answering

2007-03-31 14:17:32 · 7 answers · asked by what ever ? 2

2007-03-31 13:29:22 · 9 answers · asked by Anonymous

reaction?

2007-03-31 12:22:52 · 4 answers · asked by .·´¯`·-> вавіі-ѕнаz <-·´¯` 2

This one's been stumping me for awhile. Any help would be greatly appreciated.

Here it goes:

Calculate the number of moles of gas produced from the reaction of 2.00 g of potassium with an excess amount of water.

And here is the reaction equation that goes with it:

2K+2H(2)O==>2KOH+H(2)

2007-03-31 11:54:06 · 4 answers · asked by Anonymous

a). acids
b). bases

2007-03-31 11:50:35 · 4 answers · asked by Anonymous

I have to memorize these structures for a class and when I google them, I get different structures each time. Some are linear, some have shapes in them and stuff like that and I know they must mean the same thing, but how can I determine the identity of a structure that is using shapes by using the linear formula or vice versa? I don't know which form I am going to be given.

2007-03-31 10:40:35 · 3 answers · asked by Anonymous

its between evans blue and iodine.

2007-03-31 10:08:09 · 1 answers · asked by nelly O 1

i am detoxing from klonopin and i am at .3 ml. and i doubt the accuracy of the syringe because of the nature of the suspension.

2007-03-31 09:56:54 · 3 answers · asked by carolthec4 1