Science & Mathematics - 23 December 2007

a solution made by titraTING 2ml of 0.365% HCl with 198ml of pure water.what will the ph of the solution be?molecular mass of HCl is 36.5?
a.1 b.2 c.3 d.4 e.5
i got c.3 but it says that the right answer isd. 4

2007-12-23 23:52:04 · 2 answers · asked by Anonymous in Chemistry

2007-12-23 23:42:57 · 11 answers · asked by Dr. Susil 3 in Astronomy & Space

2007-12-23 23:37:04 · 44 answers · asked by Rock star 2 in Mathematics

another question to add to that. With a starting hand of 7 cards, what are my chances of picking up red cards in that first hand of 7 cards. Also After having a set of 7 cards what are my chances of picking up a red after each turn that I draw a card?

2007-12-23 23:21:37 · 4 answers · asked by rara 1 in Mathematics

2007-12-23 23:05:59 · 30 answers · asked by onemillionjoes 2 in Mathematics

2007-12-23 22:59:56 · 33 answers · asked by Cas Tiger 1 in Weather

a lot of people are saying its impossible.
a lot of people said it was impossible to go to the moon or travel at the speed of sound also.

what do you think about this idea, take a motor and a altinator and hook them together. but using different sized pullys.
such as a 1/2 pully on the altinator and a 10 or 25 inch pully on the motor thus giving it a ratio of turn of= 20 turns or more on the altinator to one turn of the motor.

you see my point. and what about magnets as seen on youtube .

BEFORE YOU ANSWER THIS QUESTION LOOK AT THE VIDEO'S FOUND IN YAHOO SEARCH UNDER MAGNETIC ENGINES.

and try to keep a open mind. thanks.

and yes ive read the laws on this. but i disagree, becuase of the moving parts that could have a huge impact on the laws of perpetial motion.

2007-12-23 22:52:13 · 8 answers · asked by jason h 2 in Physics

What the heck is the Pythagorean Theory?

2007-12-23 22:44:31 · 8 answers · asked by R.E. B 1 in Mathematics

2007-12-23 22:40:11 · 7 answers · asked by Anonymous in Mathematics

2007-12-23 22:09:43 · 6 answers · asked by question legend 2 in Mathematics

I remember when I was a kid, hearing something on the radio about extremally large hail that fell somewhere around Sydney Australia, it was so large that it came through roofs of buildings and caused brick walls to collapse. I think it was something like the size of basketballs. I could not find anything on the internet about it though, and I know there is a lot of cazy bs on the internet, so if a "real story" does not show up than it must be fake. I'm curious though, what is the largest hail on record? What is the limit for a hailstone? is basketball sized hail even possible?

2007-12-23 22:09:05 · 5 answers · asked by Anonymous in Weather

give the use and side effect of solutab dexana

2007-12-23 22:06:38 · 2 answers · asked by mekala t 1 in Medicine

Specifically 2 x 250mg penicillin V

2007-12-23 21:57:45 · 7 answers · asked by Gav A 2 in Medicine

At the Great Sand Dunes National Monument in Colorado, the visitors' centre has a Trombe Wall. The wall is designed for passive solar energy collection. The air in the air gap is heated during the day by sunlight. This in turn heats up the masonry wall. The heat energy is then transferred to the visitors' centre at night.

The visitors' centre is in desert landscape. Suggest what could be done to stop the system overheating when the outside temperature gets too hot. Explain your answer.

2007-12-23 21:40:51 · 4 answers · asked by Anonymous in Physics

Did you notice?

Whenever the moon is there, there also is the star beside it! Even though all other stars are unseen.

Some people are wondering if this star together with the moon is THE SAME through-out the year or this star changes to a different star...?

Please explain !
Thank You!

2007-12-23 21:40:46 · 11 answers · asked by Galiletta 1 in Astronomy & Space

please tell me

2007-12-23 21:32:37 · 2 answers · asked by Jim 5 in Astronomy & Space

How do i solve ?


51) How many integers from 0 to 50, inclusive, have a remainder of 1 when divided by 3?
A) 15
B) 16
C) 17
D) 18
E) 19

2007-12-23 21:01:00 · 4 answers · asked by sanko 1 in Mathematics

how do you write the following by using an indirect proof?

if a triangle is not isosceles, then the measure of the median to any side of the triangle is greater than the measure of the altitude to that side.

2007-12-23 21:00:03 · 4 answers · asked by goingcrazy!! 1 in Mathematics

2007-12-23 20:59:12 · 15 answers · asked by Anonymous in Astronomy & Space

and when?

Anyone know that info.
I'd appreciate it!

2007-12-23 20:56:08 · 3 answers · asked by Cassandra S. 6 in Astronomy & Space

2007-12-23 20:55:51 · 1 answers · asked by Tomás G 1 in Physics

does anyone know if theres a full moon out right now or is it tomorrow night?? its 2:53am here morning of dec.23.

2007-12-23 20:54:08 · 2 answers · asked by andres momma<3 2 in Astronomy & Space

I want to know about that what is the reason behind of -*- = +

2007-12-23 20:49:04 · 6 answers · asked by tahseen508 1 in Mathematics

2007-12-23 20:47:04 · 2 answers · asked by Anonymous in Mathematics

2007-12-23 20:41:16 · 6 answers · asked by Anonymous in Astronomy & Space

2007-12-23 20:41:01 · 37 answers · asked by Anonymous in Weather

2007-12-23 20:24:23 · 8 answers · asked by Anonymous in Physics

In a solid all atoms are arranged close together. Why don't they repel each other. In a atom the last orbit contains electron which have negative charge so why don't the electron repel each other in a solid because they are so close to each other.

2007-12-23 20:12:49 · 3 answers · asked by Anonymous in Physics

2007-12-23 20:08:14 · 8 answers · asked by Anonymous in Physics

fusion can solve the world's energy problem for the next few thousand years and can be a substitute for petroleum or natural gas ?

2007-12-23 19:53:48 · 5 answers · asked by lucifer 2 in Earth Sciences & Geology