Science & Mathematics - 3 July 2007

2007-07-03 12:55:00 · 19 answers · asked by Cowson 2 in Earth Sciences & Geology

How many grams of Potassium Sulfate must be added to 6.00 x 10^-2 mL of water to form a 2.50m<-----molal solution

2007-07-03 12:54:48 · 4 answers · asked by Anonymous in Chemistry

I have a question. I got this portable air conditioner unit and it says on the box that it puts positive and negative plasmacluster ions into the air. What on earth is that and how does it benefit me??

2007-07-03 12:54:07 · 4 answers · asked by Kel Kel 3 in Other - Science

2007-07-03 12:47:05 · 6 answers · asked by Anonymous in Engineering

"The words that herald a major scientific breakthrough are less often 'Eureka' than 'Hmmm. That's odd."

2007-07-03 12:45:37 · 11 answers · asked by Anonymous in Astronomy & Space

I have a question about how to read the kinetic energy on a potential energy graph. I can't post the graph, but if you think you can help I can email you the question.

Thanks

2007-07-03 12:44:24 · 4 answers · asked by Anonymous in Physics

I have no idea what they are talking about. It is a question with reference to a Caltech Video I watched.

What is this Single Unified Theory?

2007-07-03 12:44:15 · 3 answers · asked by emmasahottie 3 in Physics

(or sodium carbonate).
what is it exactly?
in the kitchen of course.
is washing soda the stuff that you put in the washing machine?
or the stuff you put in cakes?
or what!!!!!???/

2007-07-03 12:41:44 · 4 answers · asked by Anonymous in Chemistry

I have a Pre-Calculus and Trigonometry final coming up and I need some brushing up on a few concepts that I'm not completely solid on. There are quite a few, but any help is greatly appreciated.

1) Tricky exponential equations where the bases are different and the exponential variable is raised to a power.

I.E. 3^x^3=6^(x+5)

2) Radian word problems where the goal is to convert radians to measurement and then back to radians, given the radii of two circles and the radians turned by one.

I.E. If a pulley of 10-cm radius and a pulley of 14-cm are connected by a rope and the larger pulley turns 6 radians, how many radians with the smaller pulley turn?

3) I need to brush up on finding the answers to trigonometry functions without a calculator since the Final does not allow one.

I.E. sin^-1(2/3)

4) Radical equations with variables in uncombinable roots. I cannot give an example since I can't represent square roots with text.

Thanks in advance. Any help is greatly appreciated.

2007-07-03 12:38:13 · 3 answers · asked by Antonio P 1 in Mathematics

2007-07-03 12:26:11 · 5 answers · asked by 1DisneyNut 6 in Mathematics

me and my girlfrend r hav a depate. i want to proov that blood is blue before it hits oxygen.

2007-07-03 12:20:20 · 7 answers · asked by jimmills34 1 in Biology

Sometimes doctors are wearing nice clothes a white coat over them.
And sometimes doctors are wearing scrubs.
What do doctors wear the most often?
And do they wear the coats all the time?

2007-07-03 12:15:54 · 9 answers · asked by Davis 1 in Medicine

2007-07-03 12:14:50 · 5 answers · asked by ỉη ץ٥ڵ 5 in Agriculture

its called dexocyclin or something... im nervous
what are the side affects... risks??? please give me your experiences/ advice

2007-07-03 12:05:45 · 9 answers · asked by Anonymous in Medicine

2007-07-03 12:04:13 · 6 answers · asked by Anonymous in Botany

2007-07-03 11:59:39 · 5 answers · asked by ®ÔµM ¸showboy 2 in Earth Sciences & Geology

I need help with my triangle trig ratios. The problem contains the acute angle 43 opposite from the side x and adjacent from the side 12.

2007-07-03 11:57:24 · 2 answers · asked by jessyroma2005 1 in Mathematics

2007-07-03 11:56:53 · 4 answers · asked by Anonymous in Chemistry

i heard a few years ago the next big, catastrophic earthquake was going to hit southern california because it is due already. what do you think?

2007-07-03 11:54:41 · 6 answers · asked by Candy Ice 1 in Earth Sciences & Geology

Why do they bite? What causes our skin to react to it?Is there a chemical they inject in us?

2007-07-03 11:50:51 · 4 answers · asked by Anonymous in Biology

Is there a luanch schedule for the remaining shuttle luances ? Where ican I locate it ?

2007-07-03 11:49:50 · 8 answers · asked by bloscojm 1 in Astronomy & Space

2007-07-03 11:49:22 · 3 answers · asked by Anonymous in Chemistry

2007-07-03 11:49:17 · 2 answers · asked by talarknhansum 4 in Chemistry

2007-07-03 11:47:11 · 11 answers · asked by Mrs.Ooooiiii 1 in Weather

I mean, seriously, whats the point?

2007-07-03 11:46:13 · 2 answers · asked by Anonymous in Biology

Also provide the complete formula for it.

If you cannot just answer something for 2 points.

2007-07-03 11:45:47 · 9 answers · asked by hardcoredlw 5 in Mathematics

which could it be? Nassau, Bahamas. Anchorage, Alaska. Philadelphia,Pennsylvania. Calcutta, India

2007-07-03 11:44:01 · 4 answers · asked by dolphinbeauty2200 1 in Geography

I have answers for the probs but im not sure if they are correct though. So please help?

1.) find the probability for the experiment of tossing a coin 3 times & the sample space for it is {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}<<< THATS NOT THE PROB THATS THE INSTUCTION :}
- find the probability of getting at least two heads.
i got 4/3 but im not sure if thats correct.

2.) A college student is preparing a course schedule for the next semester. The student may select one of two mathematics courses, one of three science courses, and one of five courses from the social sciences and humanities. How many schedules are possible?
& the answer i got was 120.

3.) You can answer any 10 questions from a total of 12 questions on an exam. In how many different ways can you select the questions?
& i got 66.

Thanks.

2007-07-03 11:33:40 · 7 answers · asked by limebacardi 1 in Mathematics

Is it going to end scientifically or in a religious way? well I can see KS and TX being flooded and many forest fires..does this mean its going to end in a religious way?

2007-07-03 11:33:32 · 11 answers · asked by Anonymous in Weather

What courses are you taking?
What are they called?

If you are taking a University level course, what is it like and what are you learning?
Tell me more.

2007-07-03 11:31:40 · 12 answers · asked by V. 3 in Astronomy & Space