Chemistry - August 2007

is the same work of school pleas help

2007-08-09 15:56:40 · 2 answers · asked by Anonymous

2007-08-09 15:37:53 · 2 answers · asked by gabeezalbub 1

just wondering :)

2007-08-09 15:26:24 · 3 answers · asked by intman2805 1

2007-08-09 14:20:57 · 4 answers · asked by Anonymous

Is it 3,5-dimethylanisole?

2007-08-09 13:05:05 · 2 answers · asked by Gretch 1

a. aniline
b. toluene
c. chlorobenzene
d. benzoic acid

2007-08-09 12:40:16 · 1 answers · asked by dave b 2

a. are activating groups, even though they are electron-withdrawing
b. are deactiving groups, even though they are electron-releasing
c. are o-p directors, even though they are deactiving
d. are m directors, even though they are activating

2007-08-09 12:39:28 · 1 answers · asked by dave b 2

2007-08-09 12:38:30 · 2 answers · asked by dave b 2

A. Ph-CH2CH2CH3 -----Br2/ hv--------->

B. Ph-CH2CH2CH3 --------Br2/FeBr3----->

C. Ph-CH2CH2CH3 -------SO3----->

D. Ph-NO2 -------CH3Cl/ AlCl3------->

E. HO3-Ph-CH3 ------CH3Cl/AlCl3----->

2007-08-09 12:37:53 · 1 answers · asked by dave b 2

H20

2007-08-09 11:43:08 · 5 answers · asked by meencantasexo 1

We're told to get naked and use the emergency shower located in the middle of the lab if we catch fire or spill a chemical even if it is minor. I'm just interested to see if anyone has or would actually do this.

2007-08-09 11:32:19 · 8 answers · asked by xdtsztr 3

Consider the following common ways of chemically producing electricity: lead storage battery, Leclanche dry cell, alkaline dry cell, Ni-Cad battery, fuel cell, lithium battery.

A. Which of these can be safely recharged
B. Which of these provide a constant voltage?
C. Which one of these can provide useful voltages to common electronic devices while still being the smallest and the most lightweight?
D. Which of these has easy replaced reagents, allowing the same device to be used for years?

*I'm sure there r more than one answer for some questions

2007-08-09 11:01:13 · 1 answers · asked by whyMe 2

Molecules must overcome a barrier called the activation energy if they are to react. The highest energy point reached during the progress of a reaction is called the ____.

a. transition state
b. Arrhenius state
c. half-life
d. elementary step
e. intermediate state

what is each state?

2007-08-09 09:39:46 · 1 answers · asked by mppppp 1

what is boilmg ponit.what are the factors effecting boiling point

2007-08-09 08:50:10 · 10 answers · asked by furqan a 1

I can't comprehend the message this quote is supposed to give me!

2007-08-09 07:47:24 · 4 answers · asked by Bballplayer 1

2007-08-09 05:46:14 · 2 answers · asked by yemisi 2

16. What is the equilibrium partial pressure of water vapor above a mixture of 24.0 g H2O and 48.0 g CH3CH2OH at 25 °C. The partial pressure of pure water at 25.0 °C is 23.8 mm Hg. Assume ideal behavior for the solution.

a. 0.561 mm Hg
b. 7.93 mm Hg
c. 10.4 mm Hg
d. 11.9 mm Hg
e. 13.4 mm Hg

how do you get the answer?

2007-08-09 05:23:48 · 3 answers · asked by Anonymous

15. Which action(s) will decrease the equilibrium concentration of a non-reacting gas in water?


1. decreasing the temperature of the water
2. decreasing the volume of water
3. decreasing the pressure of the gas above the liquid

a. 1 only
b. 2 only
c. 3 only
d. 1 and 3
e. 1, 2, and 3
how do you know

2007-08-09 05:12:45 · 2 answers · asked by senqq 1

benzene, phenol, nitrophenol, aniline and acetanilide

2007-08-09 04:27:10 · 1 answers · asked by Anonymous

4. As molecular solids, which of the following will exhibit dipole-dipole intermolecular forces: PH3, SO3, Br2, and SiCl4?

a. PH3 only
b. PH3 and SO3
c. SO3 and SiCl4
d. Br2 and SiCl4
e. PH3, SO3, and SiCl4

How can you tell???? and whats the answer

2007-08-09 04:16:51 · 1 answers · asked by j d 1

2. Which one of the following substances will exhibit dipole-dipole intermolecular forces?

a. C2H4
b. SO2
c. CO2
d. F2
e. Ar

How can you tell? and whats the answer?

2007-08-09 04:12:59 · 1 answers · asked by j d 1

1. Place the following cations in order from the lowest to the highest hydration energy.

a. K+ < Ca2+ < Cs+
b. K+ < Cs+ < Ca2+
c. Ca2+ < K+ < Cs+
d. Ca2+ < Cs+ < K+
e. Cs+ < K+ < Ca2+


how does hydration energy work? and whats the answer?

2007-08-09 04:11:54 · 1 answers · asked by j d 1

Mendeleyev's Dream, when I read this I seriously, seriously thought about changing my career.

2007-08-09 03:13:52 · 2 answers · asked by Anonymous

2007-08-09 03:12:48 · 3 answers · asked by Miles 1

any specific molecular compounds?

2007-08-09 03:12:15 · 3 answers · asked by kd yo 1

2007-08-09 03:09:25 · 3 answers · asked by jackson 2

2007-08-09 03:07:57 · 2 answers · asked by jrzedvl 1

2007-08-09 02:52:18 · 8 answers · asked by Anonymous

1. why the oxidation number of an element will affect its colour???
2. i thought chlorie is a poisonous element....but when combined with sodium (NaCl), it becomes safe to be consumed...why???

2007-08-09 02:50:49 · 2 answers · asked by Lady Poise 3

2007-08-09 01:43:11 · 11 answers · asked by leera 1