Science & Mathematics - 6 November 2007

Also, what is the purpose of fermentation in the cell? does it only happen in yeast?

2007-11-06 14:22:01 · 4 answers · asked by Monz 1 in Biology

2007-11-06 14:19:44 · 5 answers · asked by greenie23510 1 in Mathematics

2007-11-06 14:19:39 · 3 answers · asked by Anonymous in Biology

Does a warm front or cold front produce more rainfall?

2007-11-06 14:19:17 · 7 answers · asked by ohbabyohbaby 3 in Weather

will it someday be possible?http://paranormal.about.com/od/timeanddimensiontravel/a/aa092004.htm

2007-11-06 14:18:12 · 7 answers · asked by Life goes on... 6 in Paranormal Phenomena

2007-11-06 14:17:45 · 2 answers · asked by Anonymous in Botany

A solid is insoluble in water but dissolves in aqueous acid and in aqueous alkali without evolution of a gas in either case.

What could the solid be?

(1) copper(II) carbonate
(2) copper(II) hydroxide
(3) sodium carbonate
(4) zinc carbonate
(5) zinc hydroxide

The answer is (5) zinc hydroxide..I don't understand..please explain..Thanks.

2007-11-06 14:17:17 · 4 answers · asked by Anonymous in Chemistry

2007-11-06 14:14:01 · 4 answers · asked by Jenna 2 in Chemistry

2007-11-06 14:13:20 · 11 answers · asked by reddude985 1 in Engineering

Use the given velocity function and initial position to estimate the final position s(b). Round your final answer to the nearest integer.
v(t) = 31(1 − e−5t), s(0) = 0, b = 6
s(b) = ?

2007-11-06 14:10:32 · 2 answers · asked by Anonymous in Mathematics

2007-11-06 14:09:08 · 6 answers · asked by Anonymous in Biology

3. Calculate the density, g/cm3, of carbon dioxide at 103.0oC and 818 torr.

4.A mixture of 5.90 g of O2 and 10.3 g of Xe exerts a pressure of 0.480 atm.
What is the partial pressure, in atm, of the O2 gas ?

5.In a mixture of H2 and CH4 gases, the partial pressure of H2 is 0.155 atm. The total pressure is 0.375 atm. The temperature is 34.0oC. If the total volume of the gas mixture is 445 mL, what is the mass of CH4 in grams?

Any help will be much appreciated!!

2007-11-06 14:07:46 · 3 answers · asked by matt b 1 in Chemistry

The Australian saying, "Whoop-Whoop" meaning some place far away in the bush/countryside - Someone told me the saying was based on a real rural town called "Whoop-Whoop". Does it really exist? and where is it located?

2007-11-06 14:06:06 · 7 answers · asked by dablip 1 in Geography

2007-11-06 14:06:03 · 1 answers · asked by preppygrl88@sbcglobal.net 3 in Botany

2007-11-06 14:05:43 · 7 answers · asked by Anonymous in Mathematics

On any drug, name your most craziest trips,highs,adventures! Name the drug.

Anyone who says somethin stupid will not be noticed. Arent you trying to get BEST answers anyway?

2007-11-06 14:05:34 · 5 answers · asked by kittie 1 in Other - Alternative

what is the first thing to divide during mitosis

2007-11-06 14:04:49 · 8 answers · asked by ohligschlager2007 3 in Biology

Cumene containing only carbon and hydrogen is used in the production of acetone and phenol, combustion of 47.6mg cumene produces some CO2 and 42.8mg water. The molar mass of cumene is between 115 and 125 g/mol. determine the empirical and molecular formulas...

now I've been working on it forever and if any one could tell me the steps to get to the answer of C3H4, C9H12 that were given it would be MUCH appreciated

2007-11-06 14:04:14 · 1 answers · asked by Anonymous in Chemistry

2007-11-06 14:01:56 · 2 answers · asked by Max Havelaar 2 in Physics

Would you agree or disagree with this?

2007-11-06 14:00:37 · 13 answers · asked by SwiftKill 4 in Astronomy & Space

2007-11-06 13:59:07 · 4 answers · asked by Anonymous in Biology

2007-11-06 13:59:01 · 10 answers · asked by Anonymous in Earth Sciences & Geology

2007-11-06 13:58:22 · 1 answers · asked by Anonymous in Botany

The element Palladium (Pd) has the electron configuration 4d^10 5s^0. Why does this element have the S orbital noted if it is empty?

2007-11-06 13:56:47 · 4 answers · asked by rexhenry11 2 in Chemistry

2007-11-06 13:56:45 · 11 answers · asked by jojojonah 1 in Biology

I have been worried that an asteroid will hit Earth. I have heard from some places. I had a nightmare one night that all of a sudden an asteroid hit Earth and a guy was screaming "AHHH!!! WE'RE ALL GONNA DIE!!!" It scared me. I have been afraid of the world ending when I'm on it. I can't imagine dying. :( Can someone give me facts or something that in a course of about 90 years that the world will not end. Oh yeah and when I woke up from my dream I was sweating and my heart was beating fast.

2007-11-06 13:56:14 · 8 answers · asked by Adam G 2 in Astronomy & Space

why can identical twins NOT be produced by 2 heteozygous parents?

2007-11-06 13:52:15 · 2 answers · asked by Anonymous in Biology

im doing a biology project where we come up with analogys for the organelles in a cell, and i need an analogy for the mitochondria.
any help will do!
thanks!!!!
:]

2007-11-06 13:50:38 · 2 answers · asked by Anonymous in Biology

On a clear night sky, aspecially from around 03h00, i normally see a bigger than other stars from Eastwards, ending mid-way in the sky by 06h00.
Which is that star, or are there others that have names too?

2007-11-06 13:50:31 · 3 answers · asked by Kiruga 2 in Astronomy & Space

I am in need of help on an algrebra factoring problem.
81r^4-256s^4

2007-11-06 13:48:42 · 2 answers · asked by Adventurebound75 1 in Mathematics