Science & Mathematics - 21 December 2006

How many litres of solutions A and B should be mixed to make 100 litres of 14% syrup

2006-12-21 05:31:37 · 3 answers · asked by KIMBA 1 in Chemistry

math

2006-12-21 05:29:40 · 10 answers · asked by Anonymous in Mathematics

A compound contains 12.8% Carbon, 2.10% Hydrogen, 85.1% Bromine (by mass) Calculate the empirical forumla of this compound. If the molar mass of tehis comopound is 188 g/mole, what is teh molecular formula

For teh empirical forumla would i just find the ratios of all those elements by doing C/H and Br/C??
For teh molecular forumla, I have no idea how to do it

2006-12-21 05:28:54 · 5 answers · asked by silentcargo 3 in Chemistry

2006-12-21 05:27:28 · 8 answers · asked by Anonymous in Other - Science

ok i live in minnesota.. or "minnesnowta".. where we get a bunch of snow every year. including the year of 1991 with our famous blizzard which happened halloween night.

right now, its raining. no snow. it hasnt rained for like, two weeks. and its flurried snow once this year. how can it be the end of december and we havent gotten an accumulating snowfall??

i know global warming and/or el nino has something to do with it. but is this happening to anyone else in your area?

2006-12-21 05:25:46 · 9 answers · asked by girl 7 in Weather

2006-12-21 05:21:01 · 17 answers · asked by Raya 1 in Mathematics

It says that thyroid extracts, amphetamines and other derivatives are found in either appetite supressants, or laxatives and diuretics. As the article is in French I can't figure out exactly which one contains them. Which seems more likely? Thanks :)

2006-12-21 05:20:29 · 21 answers · asked by Jaze 2 in Medicine

Okay, I've been tought that an atom had protons, electrons, and neutrons, and quarks and stuff inside. But why? Why do atoms need to have them? More importantly, why are electrons negatively charged, and why are protons positive? Just because they are? There has to be a more correct answer than that.

2006-12-21 05:18:34 · 8 answers · asked by bohdan 2 in Physics

Could someone please help me with these general factoring questions? " ^ " denotes an exponenet!

8x^2y-4xy-4x
36x^5y^5 - 12x^4y^3 + 6x^3y^4
x^2 + 2x -3
3x^2 - 27
6y^2 - 7y -20
y^2 + 25
5n^3 + 20n^2 + 15n
98x^2 -56x +8
y^6 + 27
3x + 81x^4

2006-12-21 05:18:30 · 4 answers · asked by Brad C 1 in Mathematics

2006-12-21 05:17:15 · 2 answers · asked by Mervin DePervin 2 in Engineering

2006-12-21 05:16:53 · 14 answers · asked by Anonymous in Zoology

Those two scientists (of which names I can't recall) discovered in the 70s that the faint hiss we hear on any modern radio reciever is the echo of the Big Bang. Several years later they published a "map" depicting the shape of the universe as an oval shaped structure with varied densities.

My question is that how is it possible to map (or mearly compute) something that is theoretically trillions upon trillions of light years in diameter? Is the universe really so "simple" to see in whole?

2006-12-21 05:16:45 · 9 answers · asked by DNA-Groove 3 in Astronomy & Space

those Birds can withstand those SubZero Tempemtures has got to be the Most Superior.of all Animals.

2006-12-21 05:15:18 · 5 answers · asked by Anonymous in Zoology

Two isotopes of Boron occur in nature. Boron-10 has a mass of 10.013 amu and an abundance of 19.61%. Boron-11 has an abundance of 80.39%. The molar mass of a natural sample of boron is 10.811 g/mol. What is the mass of a boron-11 atom?

Please show how work is done (and no this is not homework, this is review for my final). Thanks.

2006-12-21 05:14:53 · 4 answers · asked by Anitec 2 in Chemistry

2006-12-21 05:14:37 · 4 answers · asked by crystaL 1 in Earth Sciences & Geology

1. using the binomial theorem expand (x+4y)^4

2. find the equation of a circle having a radius of 10 and a center (4,-7)

3. identify the center and radius of the circle represented by x^2+10x+y^2-8y=19

2006-12-21 05:09:28 · 4 answers · asked by Shady J 1 in Mathematics

and she sung and whistled to me.
does she like me know

2006-12-21 05:08:22 · 7 answers · asked by rjhamuk 2 in Earth Sciences & Geology

she did thank me for the card and wished me a merry christmas. does she like me.

2006-12-21 05:07:01 · 19 answers · asked by rjhamuk 2 in Earth Sciences & Geology

2006-12-21 05:05:02 · 13 answers · asked by rjhamuk 2 in Earth Sciences & Geology

2006-12-21 05:04:39 · 9 answers · asked by Anonymous in Medicine

2006-12-21 05:03:59 · 6 answers · asked by rjhamuk 2 in Earth Sciences & Geology

2006-12-21 05:02:19 · 7 answers · asked by tazzy0789 1 in Earth Sciences & Geology

It is for my course work. If you know any web pages about them plz help me.

2006-12-21 05:01:02 · 2 answers · asked by Baikal 1 in Engineering

do the people have to do anything such as moning by hands and doing as they say something but in reality the do not say anything but they touch in the brain threw nervs to another people are they people learned from anyone to do that and are they terrirists who learn them such things thanks

2006-12-21 05:00:14 · 6 answers · asked by Bujar M 1 in Physics

2006-12-21 04:59:48 · 12 answers · asked by AKKOO 2 in Mathematics

Ancient cities always seem buried under may feet of earth. How does this occur?

2006-12-21 04:58:27 · 6 answers · asked by Anonymous in Earth Sciences & Geology

I need to know how long it takes for a soma to get out of your system so you can pass a drug test??

2006-12-21 04:58:21 · 4 answers · asked by lilflashinchick15 2 in Medicine

I am so scared. Yesterday I felt an earthquake but it lasted only about 5-6 seconds. My dad told me to relax and everything will be okay but I was just really frightened. I want to learn more about earthquakes and how many seconds do they last!

Thanks!

2006-12-21 04:57:43 · 2 answers · asked by indiana_pehlivanova 1 in Earth Sciences & Geology

2006-12-21 04:53:06 · 11 answers · asked by ? 1 in Geography

2006-12-21 04:52:45 · 27 answers · asked by Anonymous in Earth Sciences & Geology