Science & Mathematics - 19 September 2007

2007-09-19 03:17:17 · 2 answers · asked by Braveheart83 1 in Astronomy & Space

the number of grams of KNO3 that will dissolve in 100g of H2O at 100 celsius.

the number of grams of water required to dissolve 20g of KNO3 at 100 Celsius.

the number of grams of water required to dissolve 2.0 g CuSO4 * 5 H2O at 100 celsius

the number of grams of water required at 100 celsius to dissolve a mixture containing 20 g KNO3 and 2.0 g CuSO4*5H20 assuming that the solubility of one substance is not affected by the presence of another.

2007-09-19 03:16:43 · 2 answers · asked by ineedhelpbadly 2 in Chemistry

How many grams of water must be added to 4.19 g of AgNO3 to make a 0.171 m aqueous solution of AgNO3?

2007-09-19 03:15:28 · 1 answers · asked by lub1210 1 in Chemistry

A. How many oxygen atoms are there in 15.00 grams of NO? Answer in Moles
B. What mass of oxygen is needed to react with 8.517 grams of ammonia?
C.How many moles of water are produced in a reaction in which 45.015 grams of NO are produced?
D.How many grams of NO are actually produced when 60.02 grams of ammonia are allowed to react with 96.00 grams of oxygen?

I am so lost and confused with these questions, any help would be greatly appreciated. Thank you!!! :)

2007-09-19 03:14:31 · 2 answers · asked by Mary 1 in Chemistry

2007-09-19 03:10:01 · 4 answers · asked by jim 2 in Engineering

All 1 ohm resistors.

2007-09-19 03:09:24 · 4 answers · asked by Anonymous in Engineering

2007-09-19 02:59:15 · 3 answers · asked by Special K 1 in Engineering

This the pic:
http://chinaproducts.supplierlist.com/manufacturers/23211/V_T12864_A_L_C_M.htm

Data sheet :
http://www.varitronix.com/Product/graphics/MGLS12864T-XX.pdf


I want to know how to program for this LCD

Thnx

2007-09-19 02:56:22 · 1 answers · asked by Kudu 1 in Engineering

once again- my science fair project!
thanks!

2007-09-19 02:53:31 · 5 answers · asked by grass_fairy_14 1 in Biology

Some say the landing of Neil Armstrong on the moon is fake (It was staged), Others say it really happened. What are the logical bases and evidences that its a phony? Did Neil Armstrong and Buzz Aldrin say it was a hoax? Did NASA in Houston, Texas and JPL say that it was faked? If it was faked do you think that NASA is hiding something? There are also videos of these too. Is the man wearing the astronaut suit REALLY Armstrong in these videos? What started these rumours? What is the core truth of these circumstances? Why did they even faked this?

2007-09-19 02:53:29 · 6 answers · asked by Kyle J 6 in Astronomy & Space

2007-09-19 02:49:07 · 3 answers · asked by Anonymous in Astronomy & Space

if not... what technology or method do you suggest that we can use or do to compensate for the errors of the INS?? (we have included GPS )

2007-09-19 02:44:39 · 3 answers · asked by e! boquiren 2 in Engineering

we are doing research im in need some help =p

2007-09-19 02:29:21 · 2 answers · asked by Livy 2 in Earth Sciences & Geology

a cylindrical jar of radius 5cm contains water to a depth of 4cm. the water is then poured at a steady rate into a hemisphere bowl of radius 6cm. after t seconds, the depth of water in the bowl is x cm and the volume, Vcm^3, of water that has been transferred is given by V= [pi x^2(18-x)]/3 cm^3. given that all the water is transferred in 25 seconds, find
(i) dV/dt in terms of pi
(ii) the rate at which x is increasing when x=3

2007-09-19 02:28:54 · 1 answers · asked by Anonymous in Mathematics

can you give me some puzzling questions in maths i want to do a project on the basis of this.
my id sreedevspillai@yahoo.co.in
send to this id

2007-09-19 02:23:57 · 3 answers · asked by Sreedev.s . 1 in Mathematics

Food web for starfish(what does it eat, what eats starfish etc)

2007-09-19 02:09:46 · 2 answers · asked by BoboboboboO! 1 in Zoology

1) (5,1) and (-6,3)

2) (4,3) and (-2,-4)

3) (4/5, -1) and (2/3, 1/2)

4) (2a, 3b+1) and (a - 6, 13b+5)


ps.. write the solution if possible

2007-09-19 02:02:47 · 2 answers · asked by javv>>> 2 in Mathematics

Someone told me it was mathematically impossible to suggest that we are alone in the universe. Is this true?

2007-09-19 01:58:29 · 16 answers · asked by abluebobcat 4 in Astronomy & Space

2007-09-19 01:56:11 · 3 answers · asked by jenilyn8268 1 in Mathematics

2007-09-19 01:49:25 · 12 answers · asked by willow 6 in Mathematics

2007-09-19 01:35:44 · 9 answers · asked by Anonymous in Mathematics

Is it possible for a meteorite to make a whole village ill, such as the one in Peru?

2007-09-19 01:12:32 · 5 answers · asked by Anonymous in Astronomy & Space

When I try to imagine absolute nothingness I imagine it like the space we see except without the stars and the planets - huge, empty, silent 'space' of darkness. Is it technically wrong to think of nothingness as being "dark"? I guess what I'm trying to ask is would nothingness be black in colour or does the blackness indicate there is something so it cannot be nothingness?

2007-09-19 01:10:28 · 11 answers · asked by Anonymous in Astronomy & Space

2007-09-19 01:08:31 · 4 answers · asked by YCCindia.com 1 in Earth Sciences & Geology

2007-09-19 01:02:33 · 2 answers · asked by kau aon 1 in Earth Sciences & Geology

2007-09-19 01:00:48 · 8 answers · asked by Be~ing 2 in Astronomy & Space

Have a spider in the house whose body is the size of a pin head. What on earth does he/she eat to stay alive. He/she has a web and everything. Dustmites maybe??

Also what eats ants (in the UK)?

2007-09-19 00:59:40 · 10 answers · asked by Master J 2 in Zoology

thompson conducted an experiment right?he said that the gas emitted rays which were negatively charged.but how did he know it was negatively charged?

2007-09-19 00:49:20 · 2 answers · asked by heiress 1 in Chemistry

Pt. of Division of line segment

Help Pls!
1. The segment joining (5,11) and (-3, -1) is to be divided into four equal parts. Find the points of division.

2007-09-19 00:17:31 · 4 answers · asked by Anonymous in Mathematics

2007-09-19 00:13:28 · 21 answers · asked by kirti p 1 in Astronomy & Space