Science & Mathematics - 2 December 2006

2006-12-02 07:19:36 · 4 answers · asked by ♥ Che-che ♥ 1 in Chemistry

can anyone help me solve x raised to the 8th subtracting 1 from everything. I know it is supposed to have 8 answers two of which are x= 1 and x=-1

2006-12-02 07:16:27 · 6 answers · asked by midnytebloodlust2 3 in Mathematics

you need a 40% sol.(1000ml).you have a 70% sol. and a 20% sol. available.how much of each sol. will you need?

2006-12-02 07:14:07 · 3 answers · asked by rimple 1 in Mathematics

Can somone please help me with these problems for a study guide worksheet?

1.What is the ending of the electron notation of a gold, Au, atom?
1.5d9
2.6d9
3.5d11
4.7d9


2.All atoms in the halogen family have electron notations ending in ______ which result in them having ______ outer electrons.
1.p5 ; 5
2.p5 ; 7
3.s2 ; 8
4.s2 ; 7


3.By just looking at the periodic table, what is the outer energy level in a potassium, K, atom?
1.1
2.4
3.5
4.3

5.The electron configuration of an atom ends in 4d6. Which of the following below describes its position on the periodic table?
1.row 6, column 4
2.row 4, column 6
3.row 5, column 6
4.row 5, column 8

6.Which of the following atoms could end in the notation - - - - - - d2?
1.calcium
2.tin
3.titanium
4.chlorine

2006-12-02 07:13:08 · 2 answers · asked by calebs_baby_girl05 1 in Chemistry

If the integral of f(x) between 1 and 5 equals 5 what is the integral between -1 and -5 of f(-x)?

2006-12-02 07:11:42 · 4 answers · asked by Steve M 1 in Mathematics

♥

2006-12-02 07:05:59 · 5 answers · asked by Anonymous in Biology

I do,esp. early in the winter season.Which is a good thing because I live in NE Ohio;)

2006-12-02 07:04:59 · 19 answers · asked by MaryBeth 7 in Weather

use the substitution method to solve
x = 1/8y -1
y = 1/4 x + 39

2006-12-02 07:00:31 · 6 answers · asked by Ken H 1 in Mathematics

is anyone else offended with the notion that creationism could pass as a scientific theory?

2006-12-02 06:59:07 · 22 answers · asked by sweapea009 1 in Biology

2006-12-02 06:55:48 · 4 answers · asked by shynetra94 2 in Earth Sciences & Geology

2006-12-02 06:53:00 · 8 answers · asked by luvintheharley 1 in Mathematics

2006-12-02 06:51:47 · 5 answers · asked by luvintheharley 1 in Mathematics

I kno these groups are alot different but I had room :)

2006-12-02 06:50:49 · 3 answers · asked by Char 2 in Chemistry

Please also explain why or why not?

2006-12-02 06:47:56 · 4 answers · asked by Slightlynorth 2 in Physics

Hi,
I am trying to solve the following problem for algebra by eliminiation. Unfortuantely it comes out so that I do not understand it. The question is :
-6y+2x=8
3y-x=9
I multiply the bottom one by 2.....
-6y+2x=8
6y-2x=18
the add the 2 equations together...
0-0=26
which I don't understand?
Thanks for any help,
Nate

2006-12-02 06:47:35 · 9 answers · asked by bigcashtymer 2 in Mathematics

Also, do either of the emit EM radiation?

2006-12-02 06:43:48 · 2 answers · asked by Debbie 1 in Astronomy & Space

2006-12-02 06:39:09 · 1 answers · asked by STORMY K 3 in Geography

I saw on the news last night about a guy who had shortcuts for math, ex. 35X35=1225 take the 3 times one up so 3X4=12 and 5X5=25 to make 1225 do you know any more?

2006-12-02 06:37:46 · 3 answers · asked by polklip 2 in Mathematics

How can I get an accurate survey when markers on and off my property have been moved? Is there any way I can be guaranteed I will get a good survey when they've moved the beginning reference point?

I'm in a boundary line dispute with my neighbor. A survey crew came out and moved three of four permanent survey markers on my property and moved other markers like the reference point. They have been working with my neighbor during the dispute.

2006-12-02 06:35:54 · 14 answers · asked by ? 5 in Engineering

I heard that WW2 German snipers had 5mm tempered peaks on their helmets to prevent pentration but wouldn't the force bust a neck anyway?

2006-12-02 06:35:29 · 4 answers · asked by Thx 4 All The Fish 2 in Physics

we knew that deuterium is primarily used as fuel for the rocket propelled engine of a rocket ship. We also knew that Norway is the only country that is extracting deuterium, so i want to know if the deuterium present in the Philippine deep can also be extracted or not. This has been a very big question that the Filipino people would wanted to know. The Filipino people would be gratified if this can be answered with a positive result. The presence of deuterium in the Philippines brings hope to the Filipino populace way back 30 years ago but suddenly the hope was diminished because there is no country like the U.S. or Japan that can help us explore this very precious mineral. At present, the Filipino people does not have the technical ability to extract this, so we are asking for the support of any country that can help us find ways to solve this problem. I knew personally that this is possible because, how come that Norway could pump out their deuterium and we couldn't.It's a shame!

2006-12-02 06:33:38 · 4 answers · asked by spiderbenj 1 in Physics

heavenly bodies are come frm sun. but frm where does the sun come from...???

2006-12-02 06:33:18 · 5 answers · asked by Anonymous in Astronomy & Space

what are the good things being an astronaut? and what r the bad things being an astronaut?

2006-12-02 06:29:27 · 5 answers · asked by Rabi 3 in Astronomy & Space

2006-12-02 06:29:16 · 7 answers · asked by A 3 in Botany

A) The bernoulli effect.
B)Coanda Effect
C) Angle of attack
D) All of the above

2006-12-02 06:26:31 · 5 answers · asked by Mandi E 1 in Earth Sciences & Geology

why is it necessary to mix any solution that does not show an immediate change?

2006-12-02 06:26:17 · 3 answers · asked by airheadkj 3 in Chemistry

2006-12-02 06:24:11 · 17 answers · asked by toothydumers jud 1 in Zoology

Several; liters of 8%, 10% and 20% sodium hydroxide will be mixed together to produce 8 liters of a 12.5% concentration of sodium hydroxide. The amount of 20% solution must be 2 liters less thatn the amount of 8% solution used. How many liters of the 20% sodium hydroxide solution must be used.
P.s put this in three equations.

2006-12-02 06:24:10 · 9 answers · asked by Immortal Syther 1 in Mathematics

2006-12-02 06:22:27 · 2 answers · asked by Trisha 1 in Chemistry

A manufacturer supplies three wholesale businesses, a,b, and c. the output from a day's production is 340 cases of goods. She must send wholesaler a twice as many cases as b. Wholeshaler c gets 20 cases less than wholesalers a and b combines. How many cases of goods should be sent to each wholesaler?

2006-12-02 06:21:32 · 4 answers · asked by Immortal Syther 1 in Mathematics