Chemistry - June 2007

2007-06-09 05:07:03 · 8 answers · asked by Anonymous

2007-06-09 04:46:50 · 9 answers · asked by andreea m 1

2007-06-09 04:46:28 · 9 answers · asked by Anonymous

2007-06-09 04:40:57 · 4 answers · asked by JoeyFarina 1

2007-06-09 04:34:15 · 7 answers · asked by hunter 1

2007-06-09 04:29:23 · 4 answers · asked by Justin k 1

What is the equation for the fermentation of alchohol from molasses? Also, include structual formulas to show how the sugar can be converted into an alcohol.

2007-06-09 04:25:58 · 6 answers · asked by fddfdsafasd 2

2007-06-09 04:21:16 · 6 answers · asked by Anonymous

What's so special about Carbon, Hydrogen and Oxygen that they end up in everything that's organic?
If there is life on other planets could it be made up of different elements?

2007-06-09 04:07:15 · 9 answers · asked by Ynot 6

2007-06-09 03:56:29 · 1 answers · asked by Anonymous

2007-06-09 03:42:15 · 4 answers · asked by nadeemimtiaz a 1

What is the optimum ratio of biological matter per cubic litre to use for the maximum benefit?
I would like to thank LaTrine, Jemal, Tyrone and LaQuisha for volounteering to be my test subjects in my research. I would also like to thank Bobo the chimpanzee for agreeing to be my control subject in this experiment, which I hope will be of great benefit to mankind.

2007-06-09 03:32:12 · 5 answers · asked by Anonymous

The egg solidifies after boiling, but its volume remains the same?

2007-06-09 03:30:42 · 2 answers · asked by Anonymous

a) union of an acid and a base
b) H2+0+lightning-->H20
c) combustion of CH4 in the sky
d) god was tired, and sweat dropped from his forehead.


combustion: http://en.wikipedia.org/wiki/Combustion

2007-06-09 03:24:07 · 7 answers · asked by Roy Nicolas 5

If 500 grams of water is added to 75 grams of 25% NaCl solution, what is the percent by mass of NaCl in the diluted solution?

2007-06-09 03:09:57 · 3 answers · asked by Cookies 2

which of these acids are also called muriatic acid? H2SO4, or HCl, or HNO3, or NaOH, or CH3COOH. WHich of these substances could not act as a bronsted-lowry acid? H3O=, or H2O, or CH3COOH, or MgO, or NH3.

2007-06-09 03:06:46 · 3 answers · asked by mommy Ty 3

2007-06-09 03:04:06 · 5 answers · asked by jonaxld 1

2007-06-09 01:10:36 · 3 answers · asked by lithal 1

if we put a bottle contains one litre of water on a balance does the balance reads one kgr

2007-06-08 21:21:04 · 12 answers · asked by f d 1150 1

Zinc is a silver-gray-colored metal that melts at 420°C. When zinc granules are added to dilute sulfuric acid, hydrogen is given off and the metal dissolves. Zinc has a hardness on the Mohs scale of 2.5 and a density of 7.13 g/cm3 at 25°C. It reacts with oxygen gas at elevated temperatures to form zinc oxide, ZnO.

2007-06-08 20:47:53 · 2 answers · asked by princess 2

2007-06-08 20:45:16 · 10 answers · asked by princess 2

2007-06-08 20:42:07 · 2 answers · asked by princess 2

2007-06-08 20:17:37 · 4 answers · asked by clars 1

i have one clue, it is 4-f block element

2007-06-08 19:59:38 · 4 answers · asked by rafrot 1

of oxalic acid was heated with concentrated sulphuric acid?
(COOH)2 --> CO + CO2 + H2O.

2007-06-08 19:22:10 · 3 answers · asked by Sarang 3

What is the equilibrium expression for the following reaction: H2 (g) + I2 (g) 2 HI (g) ? a)[H2][I2]/[HI]2 b)[HI]2/[H2][I2]
c)[2 HI]/[H2][I2] d)[H2][I2]/[2 HI]

What change will maximize the production of H2 in the following reaction conducted in a sealed container? CH4 (g) + H2O (g) CO (g) + 3 H2 (g) a)removing water vapor b)increasing the volume c)decreasing the volume d)adding carbon monoxide

What is the equilibrium expression for the following reaction: SnO2 (s) + 2 CO (g) Sn (s) + 2 CO2 (g)? a)[CO]2/[CO2]2 b)[CO2]2/[CO]2 c)[SnO2][CO]2/[Sn][CO2]2 d)[Sn][CO2]2/[SnO2][CO]2

Which equilibrium will shift to the right at an increased pressure? a)2 H2O2 (l) 2 H2O (l) + O2 (g) b)PCl3 (g) + 3 NH3 (g) P(NH2)3 (g) + 3 HCl (g)
c)NaOH (aq) + HCl (aq) NaCl (aq) + H20
d)P4 (s) + 6 Cl2 (g) 4 PCl3 (l)

2007-06-08 19:10:38 · 2 answers · asked by Maddie L 1

2007-06-08 17:03:33 · 11 answers · asked by Anonymous

Why is it that scientists added a smell to gas (gas energy) so that it can be detected by the human nose, but have not done the same with carbon minoxide?
It kills tons of people every year you would think they would do the same so that being "really sleepy and then dying" wasnt the only warning of a minoxide leak...

is there a reason for this?

2007-06-08 15:54:25 · 15 answers · asked by Anonymous

a. neutral
b. mildly basic
c. moderately basic
d. strongly basic

2007-06-08 15:50:43 · 10 answers · asked by downninjette1716 1

2007-06-08 15:29:21 · 2 answers · asked by Anonymous