Science & Mathematics - 9 July 2007

In a titration experiment, 45.7 mL of 0.500 M H2SO4 was required to neutralize a 20.0 mL sample of NaOH. Determine the concentration of the NaOH solution.

2007-07-09 04:48:38 · 4 answers · asked by fabulous101 2 in Chemistry

2007-07-09 04:46:46 · 5 answers · asked by Calchas 3 in Medicine

Does anybody know a simplified version of the Kubelka-Munk model on optics? And if there are any sources that they could lead me to?

2007-07-09 04:46:29 · 1 answers · asked by Anonymous in Physics

not solar power this is electricty power im asking about all ideas are welcome i just want to save please somebody

2007-07-09 04:41:01 · 4 answers · asked by david p 3 in Engineering

2007-07-09 04:36:26 · 3 answers · asked by Anonymous in Mathematics

2007-07-09 04:35:46 · 9 answers · asked by G.xi 1 in Earth Sciences & Geology

2007-07-09 04:35:32 · 6 answers · asked by Carrie 1 in Geography

Ramp slab or inclined slab

2007-07-09 04:35:09 · 2 answers · asked by samurai 1 in Engineering

A friend of mine owns a club and would like to stop people using mobiles in there. I know that signal jammers are illegal here in the UK so is there any other options available? I have read a little on RF absorbing materials, would something like this be possible? Maybe fitting something to that walls/roof perhaps

Thanks in advance

2007-07-09 04:27:17 · 4 answers · asked by scorpionkingprawn 1 in Engineering

this morning my brother had two glass cups on the side of his bead, and when he woke up they where banging into eathother! he said the must of been a little earth qauke but i am freeking out now!
i have hear so much about the "end of the world" stuff ,,,,is it?

2007-07-09 04:25:26 · 7 answers · asked by Anonymous in Earth Sciences & Geology

x^2+8x+16
I'd like the answer and the concept. I know that the answer is (x+4)^2 , but how do you get rid of the 8x?

2007-07-09 04:23:52 · 9 answers · asked by Anonymous in Mathematics

Given the reactants, give the balanced chemical equations of the following and indicate if any, which products are soluble and which are not.

1)Sodium dihydrogen Phosphate + Sodium Hydroxide

2) Sodium Bicarbonate + Bromic Acid


(please help me. i'm not sure with my answers. thank you!)

10 pts for the best answer!

2007-07-09 04:22:17 · 2 answers · asked by carbonara 2 in Chemistry

I graphed it out, but the graph looks really weird. Please help.

2007-07-09 04:20:33 · 7 answers · asked by Anonymous in Mathematics

My brother, despite anger from the whole family, still could care less and will smoke pot in his room with the door shut and windows open with fans going to ventilate it, which is next to my room. He'll do this anywhere from 0-2 times a week, I'd guess, and has been for months. I've never ever done any sort of drug in my life, but sometimes I can smell the odor of it, and i've had to walk into his room to get something a few times, but long after he was done smoking, but you can still smell it.

Could this show up in a hair drug test? :\

2007-07-09 04:14:20 · 4 answers · asked by avebeaver 1 in Medicine

2007-07-09 04:10:01 · 4 answers · asked by vijay g 3 in Chemistry

It hasn't rained much since the winter months. Is this due to Global Warming ?

2007-07-09 04:07:27 · 7 answers · asked by Anonymous in Weather

i think it is due to lateral heat of vapourisation

2007-07-09 03:49:28 · 11 answers · asked by Tushar Garg 1 in Other - Science

2007-07-09 03:48:47 · 5 answers · asked by patrick john 1 in Mathematics

I want to know how this works in science and how it relates to Christianity.

2007-07-09 03:48:06 · 5 answers · asked by P K E 1 in Astronomy & Space

2007-07-09 03:47:39 · 9 answers · asked by Anonymous in Biology

I believe now that it's infinite backwards and backwards. Any1 heard of the new theory? the universe completes the big bang cycle every 1 trillion years. It's weird how that number is so whole and perfect. Just one trillion, amazing!

2007-07-09 03:46:43 · 9 answers · asked by toteksd 2 in Astronomy & Space

Human activity in various forms is blamed for the over-production of greenhouse gases and its consequent global warming. Up till now, nature has been able to balance out some of the greenhouse gases, notably carbon dioxide, by the process of PHOTOSYNTHESIS, whereby plants and certain micro-organisms absorb the atmospheric carbon dioxide and in the presence of chrorophyll, solar energy and water, convert it to sugar (carbohydrate) and oxygen, all products vital for life on earth. But because we are depleting forests at an alarming rate and at the same time producing carbon dioxide at unprecedented rates, this natural balance has all but gone out of control. Couldn't we therefore take a cue from nature by mimicking photosynthesis through the construction of giant carbon fixation factories in some of the world's deserts and warmer climates in order to reduce the amount of co2 currently being produced.? Is it achievable and feasible to mimick photosynthesis to any degree of efficiency?

2007-07-09 03:45:36 · 3 answers · asked by Paleologus 3 in Earth Sciences & Geology

Life in the universes, on Earth?
it might just be that we can't identify them, because current theories are invalid for usage.

2007-07-09 03:43:22 · 5 answers · asked by toteksd 2 in Astronomy & Space

if anyone watched it on the discovery channel..alot of people i know believe its the real thing

what happens is that every 285,09824 some odd years the earth lines up with something that makes the world stop rotating the way it is, and rotates the other way making the poles switch

so the friction from the earth stopping and rotating the other way would make us turn to ashes because it is so hot

then if anyone survived that, they would have to survive a massive flood because of the poles switching( antartica would become the tropics, melting all that ice causing a huge flood)

they traced it back to the time when the earth lined up with whatever it lines up with, and all of this did happen

its really making me nervous to think that the world might be ending in 5 years..what does everyone else think???????

2007-07-09 03:42:59 · 13 answers · asked by Anonymous in Earth Sciences & Geology

what are real numbers and what makes them so real? 10 points for best answer!

2007-07-09 03:29:46 · 8 answers · asked by mean. mode. median 3 in Mathematics

what is 1 + 1 x 1 + 1

do you use the PEMDAS rule and get three or do it in order and get four?

2007-07-09 03:27:01 · 18 answers · asked by corinneftw 2 in Mathematics

2007-07-09 03:23:54 · 11 answers · asked by Rio is here 1 in Astronomy & Space

http://www.youtube.com/watch?v=lghIDQSbxw8

2007-07-09 03:22:38 · 2 answers · asked by Yahoo! 5 in Physics

2007-07-09 03:20:35 · 4 answers · asked by Demetria S 1 in Mathematics

I just want to know if a number is divisible by 2 than what other numbers are also divisible by that number ?

2007-07-09 03:18:54 · 6 answers · asked by caz 1 in Mathematics