Science & Mathematics - 16 November 2006

I know it will have four fluorines, but i don't know if it is a central fluorine with three fluorines and a CH3 surrounding it, a carbon with four fluorines, something else?

2006-11-16 10:56:40 · 4 answers · asked by Hopeful Poster 3 in Chemistry

Prove (using the definition only) that the sequence of real numbers xn:= -1 + (1/2) - (1/3) +...+ (1/n)*(-1)^n is a cauchy sequence.

2006-11-16 10:54:27 · 2 answers · asked by Math_Guru 2 in Mathematics

2006-11-16 10:52:35 · 1 answers · asked by Wilochka 4 in Earth Sciences & Geology

2006-11-16 10:51:21 · 4 answers · asked by Not my name 2 in Physics

What is the balanced equation for the reaction that will occur when slufuric acid is able to dissolve solid copper (II) sulfide?

2006-11-16 10:50:05 · 4 answers · asked by BOK CHOY 1 in Chemistry

please show work

s^3+4s^2-s-4=0


thanks a lot

2006-11-16 10:49:45 · 6 answers · asked by Anonymous in Mathematics

for ionization energy, which families have the highest values? lowest values? explain.

for electronegativity, which families have the highest values? lowest values? explain.
also, for electronegativity, why does electronegativity generally decrease as you move down a group from periodic table?
and why does electronegativity increase as you go left to right?

2006-11-16 10:49:32 · 2 answers · asked by Anonymous in Chemistry

Explain the difference between a substance and a mixture.

2006-11-16 10:49:25 · 1 answers · asked by merviedz trespassers 3 in Chemistry

2006-11-16 10:49:19 · 1 answers · asked by Ladi 2 in Mathematics

Okay I know how to find the midpoint of a line segment with the formula but how do you answer this question?

Find the coordinates of the point on line segment AB that is one-fourth the distance from A to B for A(8,3) and B(10,-5).

Can anyone explain how to work this step by step?

2006-11-16 10:49:01 · 5 answers · asked by Lilaznboi2011 2 in Mathematics

Dr.Juer formerly practiced medicine at Butner-Creedmoor Family Medicine in Creedmoor, NC. Can you locate him?

2006-11-16 10:48:17 · 2 answers · asked by Grandma 1 in Medicine

2006-11-16 10:48:05 · 7 answers · asked by Katelyn W 1 in Astronomy & Space

2006-11-16 10:47:58 · 2 answers · asked by el negm 1 in Engineering

2006-11-16 10:47:44 · 7 answers · asked by spic472000 2 in Other - Science

2006-11-16 10:45:36 · 7 answers · asked by fastsrx2000 1 in Engineering

a professor dropped a mercury filled thermometer. I helped him pick it up and put it in a pyrex beaker. How much contact with mercury is too much? What kinds of effects can mercury have on a person's physiology?
bonus points: do you know why the mad hatter was mad?

2006-11-16 10:45:35 · 2 answers · asked by book_n_dog_lover 2 in Chemistry

please help me it's my hw. i really don't get it

2006-11-16 10:42:50 · 6 answers · asked by simi 2 in Physics

when you multiply the 2 and -3, you get -6 so the answer is -20r^-6??

2006-11-16 10:42:14 · 3 answers · asked by makelovenothate 2 in Mathematics

2006-11-16 10:41:59 · 3 answers · asked by Ladi 2 in Mathematics

2006-11-16 10:41:30 · 4 answers · asked by Kayla K 1 in Chemistry

2006-11-16 10:40:45 · 1 answers · asked by Ladi 2 in Mathematics

Can a coefficient of friction exceed 1.0?????

I have no idea what this means,... please help and explian if you can.

2006-11-16 10:40:34 · 1 answers · asked by Alex M 1 in Physics

A painter wants to measure out 12 gallons of paint. What steps can he use if he has an 18 gallon can, a 15 gallon can, and a 36 quart container?

2006-11-16 10:39:57 · 3 answers · asked by deej 2 in Mathematics

2006-11-16 10:37:42 · 3 answers · asked by tammy t 1 in Biology

2006-11-16 10:37:12 · 2 answers · asked by BOK CHOY 1 in Chemistry

What set of hybrid orbitals is used by the central atom in each of the following molecules and ions? (the answers must be in the format of sp3d2 for sp^3d^2)

(a). NH2^-
(b). BrF5
(c)BrF4^-
(d)SO2
(e)O3
(f)NO2^-

NOTE** this is a test review..NOT homework!!

2006-11-16 10:35:31 · 2 answers · asked by lsubetty 2 in Chemistry

ugh i hate math...
I know it would be something like 27t, but what would be the exponent for t?

2006-11-16 10:35:16 · 3 answers · asked by makelovenothate 2 in Mathematics

2006-11-16 10:34:51 · 8 answers · asked by LilahFairy 5 in Weather

2006-11-16 10:34:48 · 1 answers · asked by Kayla K 1 in Chemistry

What name is used for the treeless biome in high latitudes that has permafrost and vegetation such as lichens and moss?

2006-11-16 10:34:28 · 2 answers · asked by Anonymous in Geography