Science & Mathematics - 15 January 2007

2007-01-15 16:14:23 · 6 answers · asked by Anonymous in Chemistry

2007-01-15 16:12:14 · 6 answers · asked by fathotra 1 in Mathematics

A. become heated
B. be mixed with catalysts
C. collide with other molecules
D. increase their surface area

2007-01-15 16:12:10 · 3 answers · asked by Anonymous in Chemistry

and express the roots in a + bi form


Second question

Solve for X Fraction 5/3x - Fraction 6/4x = Fraction 1/6

2007-01-15 16:10:35 · 2 answers · asked by TheMiddleisSafe 3 in Mathematics

2007-01-15 16:08:40 · 5 answers · asked by Anonymous in Physics

A. polyethylene
B. carbon dioxide
C. sodium chloride
D. copper (II) chloride

2007-01-15 16:08:21 · 4 answers · asked by Anonymous in Chemistry

in the form of a + bi

second question

Simplify in a + bi form

(4 -i)^2


As you could see I am not understanding the a + bi form

2007-01-15 16:07:08 · 5 answers · asked by TheMiddleisSafe 3 in Mathematics

What are the most important aspects of algebra one?

2007-01-15 16:06:06 · 2 answers · asked by Socrates 3 in Mathematics

A. one breaks down into at least two products
B. a compound is decomposed by an electric current
C. a compound burns in the presence of oxygen
D. a new, more complex compound is formed

2007-01-15 16:04:44 · 2 answers · asked by Anonymous in Chemistry

Where is it located on the atlas and how is this related to the disasters that occur? And oh, tell me the level of preparedness in their country.

2007-01-15 16:02:29 · 5 answers · asked by horensen 4 in Earth Sciences & Geology

I need help with writing equations from patterns. I can do it when there is a common pattern and ratio but I don't know how to write equations for ones that don't. Could you please tell me the equations for the following patterns and then explain how you arrived at the answers?

1. {(2,12),(1,48),(-1,48),(-2,12),(-4,3)}
2. {(-3,10),(-2,5),(-1,2),(0,1),(1,2),(2,5),(3,10)
3. {(6,-4),(2,-12),(1,-24),(-3,8),(-6,4)}

Thankyou very much!!!!

2007-01-15 16:01:40 · 4 answers · asked by SoCCeRBaBe93 2 in Mathematics

topic that is simple, interesting, no one have done the research about it...

2007-01-15 16:00:30 · 2 answers · asked by sweet_petal 1 in Engineering

A. chemical symbols
B. subscripts
C. coefficients
D. reactants

2007-01-15 15:59:03 · 3 answers · asked by Anonymous in Chemistry

2007-01-15 15:58:32 · 1 answers · asked by Dave F 1 in Biology

find 2 positive numbers so that the sum of first and twice the second is 100 and the product is a maximum.

2007-01-15 15:52:51 · 6 answers · asked by fathotra 1 in Mathematics

Please help!!

2007-01-15 15:49:24 · 6 answers · asked by Merrr 3 in Mathematics

I don't know how to explain in words so ...
O = Earth, -- = Rope, ) = atmosphere, >> = shuttle.

O ) -->> what if the rope is long enough to drop down to earth from a shuttle in orbit.
O -)->> rope enters the atmosphere

Can the rope be held in mid air just like magic or will the rope pull the shuttle down.

2007-01-15 15:47:35 · 6 answers · asked by Ah Boi 3 in Astronomy & Space

Fraction 4/ y-2

PLUS

fraction
1/y

2007-01-15 15:46:42 · 3 answers · asked by TheMiddleisSafe 3 in Mathematics

2007-01-15 15:45:50 · 2 answers · asked by Anonymous in Other - Science

2007-01-15 15:44:46 · 2 answers · asked by Anonymous in Earth Sciences & Geology

2n^1/3 (n^2/3 + n^ -1/3)


The 1st letter n has an exponent of 1/3
The 2nd letter n has an exponent of 2/3
The 3rd letter n has an exponent of -1/3

2007-01-15 15:44:13 · 7 answers · asked by Anonymous in Mathematics

Im Not a terrorist and dont intend on using the nitrate for a bomb but I intend on using it as a propellant. Dont lecture me on the laws I know trust me. Does anyone know how to purify it. I know you can purify KNO3 by recrystalization. The source i have is ammonium nitrate fertilizer which is 30-0-0. I know it burns because i sloshed some on the fire and it made it flare up. But someone please help!

2007-01-15 15:43:36 · 1 answers · asked by jesse6317 2 in Chemistry

having trouble solving
please answer. thanks

2007-01-15 15:43:07 · 3 answers · asked by NABEELiOS 1 in Mathematics

2007-01-15 15:42:50 · 3 answers · asked by bettysdad 5 in Geography

2007-01-15 15:41:51 · 14 answers · asked by au197_0 3 in Engineering

The measured pH= 5.18 for a solution containing 25.0mL 1.M NaCH3COO and 10 mL1.0 M CH3COOH. Calculate the corresponding value of Ka for the acetic acid.

2007-01-15 15:41:25 · 1 answers · asked by Anonymous in Chemistry

Two points: (-8,3) (8,0)
Slope: -3/16

Answer is supposed to be in standard form Ax + By = C.

I came up with 3x+16y=24. Is this right?

2007-01-15 15:40:54 · 7 answers · asked by Anonymous in Mathematics

9x+2=18x^2

2007-01-15 15:36:14 · 11 answers · asked by Just Wondering 5 in Mathematics

Sun, Science

2007-01-15 15:34:42 · 12 answers · asked by Ronald R 1 in Astronomy & Space

i'm also a bit confused about fission vs fusion. and why does one word have 2 s's and the other 1 but they sound the same. just ignore that question for now.
talk to me about basic forms of these reactions

2007-01-15 15:34:14 · 5 answers · asked by smokesha 3 in Chemistry