Science & Mathematics - 29 September 2007

Wikipedia says that the first acid dissociation constant of H2O2 is 11.65. I would like to know the second acid dissociation constant, which I cannot seem to find. There is not enough thermodynamic data in the NIST WebBook to calculate it myself. Also, I would like to know the answer both for anhydrous hydrogen peroxide and dilute hydrogen peroxide solution.

2007-09-29 05:54:58 · 3 answers · asked by ​ 7 in Chemistry

I just bought a telescope from Costco and when I look at houses about a half mile away, the image is upside down. What gives?

2007-09-29 05:53:07 · 11 answers · asked by ? 3 in Astronomy & Space

we are doing scatter plots in Algebra II now and i need to know how to make these on my calculator, so could you explain how to do this....and find the 'line of best fit'????

2007-09-29 05:52:43 · 2 answers · asked by P dizzle 2 in Mathematics

US News Aug., Scientific American Sept. and Harper’s Magazine Oct issues have articles about genetically altered food. These articles explain the difference between making within species versus mating unlike things such as tomatoes and flounder fish to create tomatoes with antifreeze qualities. Also, globalization interferes with regulation which makes genocide easier. Creating products that produce their own pesticides that rats, cattle and bugs will not eat is mixed into human food and sold to us as a way to fix world starvation. It so seems that mass food with no nutritional value that induces heart disease, diabetes and cancer is assuring the need for medical intervention by promoting overweight malnourished people with no way of knowing if the addicting genes of such plants as cocaine and heroine are being blasted into these foods to increase desire for foods lacking in nutrition while inducing lethargy.

These articles raise the question of how can one be sure that Porky the pig is not laced with cocaine and Foghorn Leghorn’s DNA has not been altered with heroine to eliminate protein absorption while making us crave fried chicken?

From a professional point of view I have seen a change in body fat and immunity over the past twenty years. Evolution has not changed so quickly in the past, so one must wonder what we are doing (in the name of great fortunes that can be had) that is making many humans over weight and lazy or starving and paying for liposuction?

Blah, blah, blah answers imply laziness not wanting to fix or change status quo or having vested interest in genetically modified (GMO) products. Does anyone else feel more open communication and product labeling that products are GMO is needed to allow people all over the world to decide what they want to buy and be more informed?

2007-09-29 05:47:18 · 6 answers · asked by Traveler 4 in Agriculture

How Is It That SHM Can Break Things?

I Know That Some Materials Have A Frequency At Which They Break, But Why?

2007-09-29 05:40:22 · 3 answers · asked by Oel Pezlo 3 in Engineering

1. Aluminum hydroxide reacts with sulfuric acid as follows: 2Al(OH)3 (s) + 3H2SO4 (aq) -----> Al2(SO4)3 (aq) + 6H2O (liquid)

Which reagent is the limiting reactant when 0.500 mol Al(OH)3 and 0.500 mol H2S04 are allowed to react? How many moles of Al2(SO4)3 can form under these conditions? How many moles of the excess reactant remain after the completion of the reaction?

Thanks for any help. Reasoning/steps are appreciated :].

2007-09-29 05:37:12 · 3 answers · asked by RuleOfTheRose 2 in Chemistry

find a fourth degree polynomial equation with integer coefficients, which has no cubic term and no constant given: 3-i√7 is one root.

2007-09-29 05:36:23 · 2 answers · asked by undergroundburn 2 in Mathematics

2007-09-29 05:35:11 · 8 answers · asked by black angel 1 in Geography

hello i came across a question in my physics homework that i will really appreciate help with. Here it is:

at 3:00 p.m. a truck traveling on a winding highway has a velocity of 82.0 km/h [N 38.2 E] ; at 3:15 p.m., it has a velocity of 82.0 km/h [E 12.7 S]. Assuming that +x is easy and +y is north, determine the x- and y-components of the average acceleration during this time interval.

the answer at the back of the book:
a av,x = 9.0 x 10^-3 m/s^2
a av,y = -2.5 x 10^-2 m/s^2

thanks a lot for anyhelp!

2007-09-29 05:32:07 · 2 answers · asked by Anonymous in Physics

or am i jus an iddiot

2007-09-29 05:31:57 · 15 answers · asked by Anonymous in Astronomy & Space

2007-09-29 05:31:02 · 1 answers · asked by lida setareh 1 in Biology

so according to string theory and m-theory there is an infinite number of universe each with different laws of physics. and that every single outcome of anything is in one of the infinite many universes. so doesn't that mean that in at least a few universes string theory is wrong. so doesn't that prove the whole thing?

2007-09-29 05:30:33 · 6 answers · asked by Anonymous in Astronomy & Space

Find an equation of the line that is tangent to the graph of f and parallel to the given line.

f(x)=1/(root x-1)
Given line : x+2y+7=0

Please help!

2007-09-29 05:30:02 · 2 answers · asked by Anonymous in Mathematics

2007-09-29 05:29:16 · 2 answers · asked by lida setareh 1 in Biology

2007-09-29 05:28:20 · 2 answers · asked by Anonymous in Mathematics

please answer quickly

2007-09-29 05:27:11 · 15 answers · asked by srinath 1 in Astronomy & Space

2007-09-29 05:26:46 · 2 answers · asked by lida setareh 1 in Biology

2007-09-29 05:26:39 · 3 answers · asked by Anonymous in Chemistry

We have lived in our house for about 4 years, and then all of a sudden in the last month or so, these things have been popping up everywhere, seemingly overnight. They are rather big, probably like 5 inches x 5 inches or bigger. They are hard, and are attached to the ground. When I kicked them off, the inside is solid and looks dry like divinity candy or something. They are also hard to get off the ground.

We live in California, so we haven't had any rain in months, and these things are growing out in the open, under bushes..even near our completely empty patio area. Our ground is very hard right now with no rain, and there are not any recently removed tree's, etc. They are completely solid, not spongy like a mushroom would be.

I am beginning to get worried if it is some sort of mold infestation or something. I am going to try and post a link to a flickr photo of the "alien mold spore".



http://www.flickr.com/photos/14300001@N02/

2007-09-29 05:24:46 · 4 answers · asked by blaze027 3 in Botany

2007-09-29 05:23:57 · 17 answers · asked by Diana Y 1 in Astronomy & Space

i need a pic

exulding humans


its for a class

has to be a action photo

2007-09-29 05:22:56 · 4 answers · asked by Anonymous in Zoology

2007-09-29 05:22:45 · 5 answers · asked by nicofara 1 in Biology

2007-09-29 05:22:23 · 2 answers · asked by Anonymous in Chemistry

Does it just stop some place out there or does it go on and on? If it doesn't end someplace, how is that possible? Doesn't everything have a place where it begins and a place where it ends? Can it just be there taking up space everywhere?

2007-09-29 05:17:10 · 11 answers · asked by Anonymous in Astronomy & Space

in the reaction, 2Hg+O2--->2HgO
20.0 g of Hg are reacted with 5.00 g of O2. Calculate the maximum amount, in
grams, of HgO formed.

2007-09-29 05:13:19 · 4 answers · asked by chemistrysucks 1 in Chemistry

2007-09-29 05:11:44 · 2 answers · asked by hiv 1 in Biology

This is an organic chemistry post lab report question.

Also, if you know about recrystallization, benzoic acid has a solubility of 68g/L in 95 C water. What is the min. volume of water it would take to dissolve 10 grams of benzoic acid at 95 C?

2007-09-29 05:11:16 · 4 answers · asked by Samantha 4 in Chemistry

2007-09-29 05:10:20 · 6 answers · asked by Anonymous in Chemistry

On a soccer team of 22 players a starting lineup of 14 players will be chosen. 1 of 2 keepers is chosen 4of 6 defenders are chosen. 4of 8 halfs are chosen . 2of 6 strikers are chosen .The 11 players starting lineup can be created in ____?



Four of eleven numbered balls are withdrawn from a container in sequence without replacement . What is the proability that the 3rd number is greater than a 7 and the 4th number less than a three expressed to the nearest tenth of a percent? Assume that the ball numbers begins at 1 and end at 11 and no numbers are repeating.


Is anyone show the steps or what formulas should be used ?


thx.

2007-09-29 05:09:56 · 1 answers · asked by Try L 1 in Mathematics

2007-09-29 05:05:27 · 1 answers · asked by Anonymous in Chemistry