Science & Mathematics - 29 September 2007

Na_2SO_4+ HNO_3

_# means # is a subscript

2007-09-29 08:38:19 · 1 answers · asked by Anonymous in Chemistry

Is talc asbestos? I understand there is an incredient in baby powder that is detrimental to humans. Do you know what it is?
An organic farmer at our farmer's market is using "baby powder" on the apples to keep the birds away.

2007-09-29 08:36:18 · 4 answers · asked by Lilaac 2 in Chemistry

ok my numbers are 3000 2100 = 900 what is the missing percentage

2007-09-29 08:35:16 · 6 answers · asked by SHF 1 in Mathematics

what happens when you ask 20 questions in 1? who has seen that listerene commercial where it says you can have millions of germs in your mouth. how do get them? the question with the wasp where are they (countries+places+region). most populated city. hottest place in earth + coldest place in earth?

2007-09-29 08:29:34 · 2 answers · asked by qaz 2 in Zoology

1.) Evaluate the line integral over y=x^2 (0 F=(2x+2y)i + (x^2 -y)j
my actual answer came out to be 5/3... but why does our instructor say that the answer should come out to be 1. Did he do something wrong???

b.) Evaluate the line integral F =yi + x^2j over y=(1/2)x^2 (0 Once again I ended up with -6 when performed myself.

2007-09-29 08:28:10 · 1 answers · asked by jack86 1 in Mathematics

Hi can you please help me answer this.

Without a calculator how can you find the first positive solution for
Cosec 3x = 2

I would presume the first step is

1/sin3x=2 but where do i go from here?

2007-09-29 08:26:07 · 4 answers · asked by biscuit.heads 2 in Mathematics

2007-09-29 08:24:10 · 6 answers · asked by jackie 3 in Paranormal Phenomena

http://telekinesis.50megs.com

2007-09-29 08:20:46 · 3 answers · asked by survey taker 2 in Other - Science

I dont hear the korotkoff sounds until maybe 6-8mmHg after the ticker on my aneroid sphygmomanometer "flickers" as it drops. Do I record it when it starts flicking or when I actually HEAR the sound through the stethoscope?

Thanks. I'm a student by the way, just checking before my exam.

2007-09-29 08:20:19 · 3 answers · asked by Anonymous in Medicine

I am curious to know your response to the studies collected by the RATE group finding significant radioactive Carbon 14 in coal, zircons, and diamond samples at varying sedimentary levels in the geologic column?

Please do not make ignorant statements such as RATE scientists are cheating on the data they submitted, or these PhD scientists (geology, physicists, etc.) are not scientists and are ignorant because they are not specialists in chronology (i.e. evolutionists) but are Young Earth Creationists.

2007-09-29 08:16:52 · 7 answers · asked by Jeremy Auldaney 2 in Earth Sciences & Geology

2007-09-29 08:16:25 · 1 answers · asked by claudia c 2 in Other - Science

2007-09-29 08:06:48 · 4 answers · asked by Anonymous in Mathematics

2007-09-29 08:05:12 · 1 answers · asked by chunky1990 3 in Earth Sciences & Geology

2007-09-29 08:04:38 · 2 answers · asked by Anonymous in Weather

2007-09-29 08:02:31 · 5 answers · asked by Anonymous in Mathematics

phisical or chemical-
1) metals tarnish in moist air
2)gasoline burns
3)paint fades

2007-09-29 07:58:26 · 8 answers · asked by skeena25678 2 in Chemistry

is it excited state?

2007-09-29 07:52:45 · 3 answers · asked by Nina A 2 in Chemistry

How is 3(L^1/3) times (24-L)^1/3 equal to L(24-L) ?

2007-09-29 07:46:34 · 5 answers · asked by John L 2 in Mathematics

Can someone explain the Clay Crystal Theory (a.k.a. the Clay Theory) to me?
--------
The theory was made by Graham Cairns-Smith
I tried looking it up on the internet, but the explanations used many scientific words that I couldn't understand :(

2007-09-29 07:41:07 · 2 answers · asked by lite_bluestar 2 in Biology

2007-09-29 07:41:02 · 2 answers · asked by JDAWG 2 in Other - Science

i need to know

2007-09-29 07:41:02 · 4 answers · asked by littlemermaid805 1 in Zoology

i connected a ZTX 300 transistor withe a 10k variable resistor the supply voltage was 6v , i've taken the results for every rime i increase the variable resistor size . i get these results :
Ib : 0 , 23.7 , 52.7 , 56.8 , 57.6 , 57.7 , 57.9 , 57.9
Ic : 0 , 0.12 , 0.42 , 0.68 , 1.24 , 2.89 , 5.61 , 5.62
these results in mA ...
- Does the results look correct and how do i know that ??

2007-09-29 07:38:16 · 3 answers · asked by Ahmad M. Alawi 3 in Engineering

2007-09-29 07:30:35 · 2 answers · asked by Ahmed 1 in Medicine

an average human cell like tcell and blood cell are 60 times bigger than hiv. there are about 10 000 to 100 000 cells in a single drop of blood and they can be red blood cells, white blood cells and others. imagine just 100 HIV within a single drop of blood. remember that a single drop of blood might contain 10 000 to 100 000 bigger cells like red and white blood cells. and they say that hiv will die in a single drop of blood that will dry up outside the human body. how can hiv be destroyed within a single drop of blood if that hiv contaminated blood itself is situated in liquids at very neutral temperatures. and how can the oxygen or environmental agents kill the 100 HIV that is kept within tens of thousands of bigger blood cells plus blood fluid within a single drop of blood? wont the bigger cells and blood fluid block oxygen and environmental agents from getting into the HIV itself? how will hiv in a drop of blood be destroyed in wet soups and wet foods at very neutral temperatures?

2007-09-29 07:29:27 · 4 answers · asked by Anonymous in Medicine

What is a quiet passive ventaliation? in human physiology?

2007-09-29 07:26:22 · 1 answers · asked by TwiLight* 3 in Biology

2007-09-29 07:25:20 · 3 answers · asked by Marina R 1 in Biology

2007-09-29 07:20:51 · 6 answers · asked by . 1 in Mathematics

I would like to make it move round and round.

2007-09-29 07:14:16 · 2 answers · asked by Billy_Bob 1 in Engineering

I need them to be all done and dusted before I go there in 5 weeks.

2007-09-29 06:58:39 · 2 answers · asked by Anonymous in Weather

If life is the decive factor when judging the safety of nuclear energie why not compare the number of casaulties caused by the production of electricity by all know means. Including the Chernobyl disaster. Anybody have such data available ?
Thanks, Wim de Weerd, Germany

2007-09-29 06:55:01 · 6 answers · asked by uraanwim@yahoo.de 1 in Engineering