Science & Mathematics - 4 January 2007

what method could i use to experiment the effect of varying the concentrations of oxalic acid and to find the rate equation of the reaction?? plz help

2007-01-04 02:35:39 · 2 answers · asked by Anonymous in Chemistry

2007-01-04 02:34:22 · 2 answers · asked by helpless kid 2 in Chemistry

2007-01-04 02:33:57 · 26 answers · asked by Anonymous in Astronomy & Space

4 2/7- 2 5/7=?

2007-01-04 02:32:15 · 5 answers · asked by Anonymous in Mathematics

2\/27 + 4\/2 \/= square root

2007-01-04 02:29:27 · 6 answers · asked by Anonymous in Mathematics

What is a buffer and how does it regulate pH?

2007-01-04 02:27:02 · 4 answers · asked by td 2 in Biology

2007-01-04 02:26:56 · 20 answers · asked by koteshwara r 1 in Chemistry

I have heard that the L.A. basin is one such a place....Thanks for your answer...Tom Science 4

2007-01-04 02:25:10 · 2 answers · asked by Anonymous in Weather

2007-01-04 02:18:25 · 19 answers · asked by Peter C 1 in Mathematics

Here is the logistic model equation for the growth in mass of a quantity of bioremediation bacteria:
*b and o are bases of the letter m.
mb(t) = L / (1+((L-mo) / mo)e^(-Lkt)) where mb(t) is the mass of bacteria at time t, L is bounded/maximum mass, k is the growth constant, and mo is the initial mass. The model can be constructed by substituting values of mo, L and a known ordered pair for (t, mb) into the equation and solving for k.
The engineer conducting the study found that starting from an initial mass of 0.2 kg, the bacteria grow to a maximum mass of 2.6 kg following a logistic growth pattern. The mass after five days for this experiment was 1.5 kg. The engineer has modelled the mass of contaminant remaining in kilograms as
*c is the base of m and 3 is the base of log.
mc(t)= -log3((squrt of t)+1) +2.5 where mc(t) is the mass of contaminant remaining (kilograms) in t days.
1. What is the logistic growth function model for the bacterial mass?

2007-01-04 02:18:02 · 1 answers · asked by hap17 1 in Mathematics

here is an intresting question that i made..but i donno the ans..
help me out..

2007-01-04 02:13:42 · 5 answers · asked by alan john 1 in Mathematics

no matter how many times i seem to try and get my head around it i get confused because every periodic table i seem to look at is different

2007-01-04 02:13:34 · 13 answers · asked by jess_xx_2001 1 in Chemistry

to whom it may concern,
my name is rachel wilson. i am a junior at morgan park high school. i am doing a project on bacterial fermentation scientist and i needed some information about this type of scientist. if you can, will u please send any information on a bacterial fermentation scientist? thank you very much

2007-01-04 02:10:44 · 4 answers · asked by booshnack 1 in Chemistry

2007-01-04 02:10:36 · 2 answers · asked by Anonymous in Chemistry

If not does the number of atoms increase with a If so how does the current increase, is it because there is greater space between the atoms and therefore free electrons can ionise the atoms more easily?

2007-01-04 02:09:12 · 4 answers · asked by MrT 3 in Physics

Nuclear submarines

2007-01-04 02:05:32 · 1 answers · asked by marzmargs12 6 in Engineering

2007-01-04 02:05:20 · 7 answers · asked by Anonymous in Mathematics

(a) log(with a small 2) 32

(b) log(with a small 3) 6 to 3 d.p.

2007-01-04 02:04:12 · 3 answers · asked by SHIBZ 2 in Mathematics

2007-01-04 02:04:09 · 13 answers · asked by heny ham 1 in Geography

I asked this before but kind of goofed. The college math course I'm taking requires a TI-83 calc, but I've gotten the feeling that TI makes much better calcs that can do the samething. I'm not looking to spend an arm and a leg, but I'd rather have a better calc with more power if that will help out.

2007-01-04 02:03:26 · 6 answers · asked by greenfrogthing77 1 in Mathematics

sin^2 x + cos 2x = cos^2 x

2 / cot x - tan x = tan 2x

2007-01-04 02:00:31 · 3 answers · asked by Anonymous in Mathematics

Many recent answers to weather has related global warming as the cause for the recent warm weather the country, specifically the Northeast, has experienced. What is your basis for this claim?

2007-01-04 01:59:25 · 9 answers · asked by Michael L 2 in Weather

2007-01-04 01:58:36 · 18 answers · asked by Anonymous in Mathematics

I had this Q in a test:
Differentiate f(x) when
f(x)= [(√x-1)^2]/√x

The answer the teacher gave was
1) f(x)= [(√x-1)^2]/√x
2) f(x)= x^(1/2)-2+x^(-1/2)
3) f'(x)= 1/2x^(-1/2)-1/2x^(-3/2)

I know how to get from the second stage to the third in the working out, but can somebody please explain how to get from the first stage to the second

2007-01-04 01:58:08 · 3 answers · asked by Anonymus 2 in Mathematics

2007-01-04 01:57:44 · 5 answers · asked by gargi k 1 in Mathematics

Two negative charges of unit magnitude and a positive charge q are placed in a straight line. At what position and for what value of q will be the system be in equilibrium

2007-01-04 01:57:17 · 6 answers · asked by GUNA S 1 in Physics

2007-01-04 01:57:10 · 5 answers · asked by Anonymous in Zoology

Are they able to adapt to the changes in altitude that humans and other animals manage to do?

2007-01-04 01:56:49 · 14 answers · asked by Petite F 1 in Zoology

Find the path of a particle projected with a velocity v at angle x to the horizon in a medium, whose resistance, apart from gravity, varies as velocity. Also find the greatest height attained

2007-01-04 01:48:03 · 2 answers · asked by GUNA S 1 in Mathematics

A room is 12' X 8' East/WEst walls. North/South Walls 10' X 8'. A spider is 5' up and 2' in from SE corner, a fly is 4' up and 4' in from NW corner. How far must the spider go to catch the fly? Need a math equation to solve.

2007-01-04 01:45:37 · 3 answers · asked by Anonymous in Mathematics