Science & Mathematics - 30 October 2007

2007-10-30 07:44:36 · 2 answers · asked by Anonymous in Chemistry

2007-10-30 07:44:18 · 2 answers · asked by keithplancich 1 in Astronomy & Space

Now that we have all this technology to get around all the problems we face...

2007-10-30 07:40:58 · 11 answers · asked by Anonymous in Biology

chloride and the other is calcium chloride. Describe a qualitative test you could perfrom to determine which is whic? Be specific. You will need to write the chemical equations that describes any chemical reaction performed here - if appropriate.

2007-10-30 07:40:19 · 2 answers · asked by Anonymous in Chemistry

1) Indicate whether a reaction would occur when you mix aqueous solutions of each of the following two substances.

Yes or No

potassium chloride and bromine.
sodium iodide and bromine.
sodium bromide and iodine.
potassium iodide and chlorine.

2)What is the result of mixing each of the following pairs of reagents?

NaI + Br2

I− + Cl2

KCl + Br2

2007-10-30 07:38:58 · 5 answers · asked by KC 1 in Chemistry

BXDE=ABC
A,B, and C are consecutive digits. D and E are also consecutive digits. A, B, C, D, and E are all different digits. If B x DE = ABC, find the sum of A+B+C+D+E. (Note: C and D are not necessarily consecutive digits.)

2007-10-30 07:38:21 · 3 answers · asked by mascasa002 2 in Mathematics

3=10 log10 s/n .........so s/n=?

2007-10-30 07:31:59 · 6 answers · asked by SHAHENDA S 1 in Mathematics

2007-10-30 07:31:14 · 2 answers · asked by buttercrunch 1 in Chemistry

I need to know when August 20Th will be on a Saturdat again...What year?

2007-10-30 07:27:56 · 13 answers · asked by grammy_5xs 1 in Weather

It's on a South Pacific island.

2007-10-30 07:27:42 · 2 answers · asked by hamilton186@att.net 1 in Geography

Hi I really need your help!

Which of the following is not a function given that x is an independent variable?

a. y= 6sqrtx, x>=0
b. {(6,4), (-2,1), (10, -1)}
c. y=6x^2-4
d. x=6y^2-4

Please help!

2007-10-30 07:26:04 · 2 answers · asked by Veronica K 3 in Mathematics

A patient weighs 146 pounds and is t orecieve a drug at a dosage of 45.0 mg per kg of body weight. The drug is supplied as a solution that contains 25.0 mg of drug per mL. How many mL of the drug should the patient recieve?
(1 pound= 454grams)

2007-10-30 07:25:37 · 4 answers · asked by Anonymous in Chemistry

2007-10-30 07:24:28 · 21 answers · asked by Anonymous in Astronomy & Space

2007-10-30 07:23:30 · 1 answers · asked by Tommy 2 in Physics

2007-10-30 07:23:02 · 4 answers · asked by pxn11 1 in Weather

2007-10-30 07:22:58 · 5 answers · asked by ♥ Tori ♥ 5 in Physics

can someone tell me wich scientists have these elements named after them? Nobelium, Einstenium, Cutium, Fermium, Mendelevium.

2007-10-30 07:22:29 · 1 answers · asked by Larry 2 in Chemistry

Which of the following elements is found in the main group elements of the periodic table?

1. Fe
2. Md
3. Hg
4. Se

I believe it is Fe. WHat makes it a part of the main group?

2007-10-30 07:20:49 · 6 answers · asked by Anonymous in Chemistry

1-pot.acetate
2-amm.sulphate
3-zinc.phosphate
4-calcium oxide
5-aluminium sulphide

***Name the following
1-MgCL2
2-Cu(NO3)2
3-Li2(so4)
4-Ca(OH)2
5-FeSO4
6-H2SO4

2007-10-30 07:19:07 · 2 answers · asked by mohamed r 1 in Chemistry

integral (0,.5) cos x^2 dx (SHOW WORK) Give your answer correct to 3 decimal places.

2007-10-30 07:18:24 · 3 answers · asked by sugardaddy8815 1 in Mathematics

when the clock goes back an hour what happens at 12 midnight? do we have 2 hours of 11 o'clock. i don't understand or do we have two hours of 12 midnight?

2007-10-30 07:16:59 · 14 answers · asked by laughing_stock 1 in Physics

a typical aspirin tablet contains 5.00 grains of pure aspirin analgesic compund. the rest of the tablet is starch. How many aspirin tablets can be made from 100.0 grams of pure aspirin? (1.00 grams= 15.4 grains)

2007-10-30 07:15:30 · 2 answers · asked by Anonymous in Chemistry

i wud like ne point to support this statement.....or even go against it...

2007-10-30 07:15:27 · 3 answers · asked by alphashter 1 in Mathematics

E,n=0, 3^n/((5^n)*n!)

2007-10-30 07:11:31 · 4 answers · asked by sugardaddy8815 1 in Mathematics

http://img248.imageshack.us/img248/1639/cylinderjl0.jpg

A uniform cylinder with a radius of R and mass M has been attached to two cords and the cords are wound around it and hung from the ceiling. The cylinder is released from rest and the cords unwind as the cylinder descends.
(a) draw a proper free body diagram for the cylinder;
(b) Apply Newton’s second law to the cylinder;
(c) apply Newton’s second law in rotational form to the cylinder;
(d) the two equations you have written so far
contain three unknowns; what is the relationship between the linear acceleration of the cylinder and its angular acceleration? (e) Solve for the linear acceleration of the cylinder; (f) What is the tension in the cords?

2007-10-30 07:09:11 · 2 answers · asked by nebulus9 2 in Physics

2007-10-30 07:06:34 · 5 answers · asked by PROFESSOR SCIENCE 5 in Mathematics

Hi, I have a miniature rose bush that I keep indoors year round. The roses are normally a coral color. Recently I changed all of my light bulbs to the compact florescent light bulbs and one of my rose plants (that is kept next to my lamp) has bloomed a pale pink flower and the new green foliage is lighter than the older foliage. I am curious to know whats going on and If it is the light bulbs creating the changes in color. The plant seems to be doing better then it ever has.

2007-10-30 07:05:17 · 4 answers · asked by NicoNico 2 in Botany

The Tropic of Cancer is 23.5 degrees north of the Equator. On a given day a vertical stick on the Equator casts no shadow while the one on the Tropic of Cancer does. Calculate the circumference of the earth using this information. (HINT: One degree of latitude is approximately equal to 111 km)

2007-10-30 07:03:15 · 4 answers · asked by autumn<33 2 in Earth Sciences & Geology

enter an answer in exponential notation use e, example: 1.47e-8

2007-10-30 07:00:12 · 2 answers · asked by chemical.garry 1 in Chemistry

How would I extract this...

(r+6)^2 = 13

2007-10-30 06:59:39 · 4 answers · asked by Anonymous in Mathematics