Homework Help

Can someone help me step by step to solve this problem. My textbook doesn't help. I have tried to look for help on this topic, but I don't seems to comprehend the sample problem. The Ksp for AgCl is 1.6 X 10-10. What is the [Ag+] and [Cl-] in a saturated solution of AgCl? The solubility of CaF2 is 1.7 X 10-3 g/100g water at 25C. What Ksp at 25C for this compound? CaF2(s) <--> Ca+2(aq) + 2F-(aq)

hello every1, I have a little question that I wasn't able to find any answer for, and it is an economical question: - Are there any environmental problems facing Indonesia and what are the likely economic consequences of there problems? Any answer would be really appreciated, Many Thanks, Wassouf

Can any1 help me with this question? The radioisotope cesium-137 has a half-life of 30 years. A sample decayed at the rate of 544 counts per minute (cpm) in the year 1985. In what year will the decay rate by 17cpm? (ans: 2135)

I am only a fifth grader, so would appreciate it if no one laughed at me for asking this question but I cant find the answer ANYWHERE........ What was the first man-made object to go faster than the speed of sound? If you could tell me it would be greatly appreciated, and yes, I did try to find the answer myself but failed.

How to solve the following equation. 20x+10^x=0

My final chemistry exam is in about a week, and I still don't know EXACTLY how salt bridges of electrochemical cells work. None of my three textbooks explain it in-depth. I know the salt bridge's functions, but what exactly happens? For example, let's say we have a Cu anode and Ag cathode, in their respective half-cells. The electrolytes are Cu(NO3)2 and AgNO3, respectively, in the half cells. Let's say there's MgSO4 in the salt bridge. I understand that without the salt bridge, the half cells would become charged and the electrons wouldn't flow. That's all fine. What I don't get is which ions go from where to where to maintain the overall neutrality of the cell.

HEEEEEEEEEEELPPPPPPPP!!!! I NEED THIS NOWWW!!!!!!!!!!BAD!!!!!!!!!! no. 1: which is easier to rotate between two dumb bell of the same mass with greater and lesser distance from the axis of rotation? no.2: if you walk along the top of a fence or a narrow wooden bench, why would extending your arms out help you to balance?

[math]sin(\frac{\pi}{6}+x)=\frac{1}{2}(cosx+\sqrt{3}sinx)[/math] how do i start this one? am i supposed to distribute the right side or work with the left?

we hv done a lab dertermining the heat of hydration of CuSO4(s) using the results from diluting anhydrous CuSO4 and CuSO4.5H2O in water... final ans obtained= 68.88 KJ/mol there is a question like that what is the significance of the heat of hydration of copper(II) sulphate? thx~

Fancy there has a beaker with water, a potato without skin is put at the central of the beaker. There is a cavity on the potato,about 7 cm. The cavity is contained with a sucrose solution. The water potential outside is higher than that of the sucrose solution. The cell membrane is a differentially permeable membrane. After ten minutes, if we cut a small cell from the cavity region and observe under microscope. What's the appearence of the cell? Flaccid, plasmolysis or turgid?

I'm just curious, are there any substances that are: A) Flourescent B) Cannot be separated at the molecular level by any means aside from capillary electrophoresis. The first is optional; the second is a must. Thanks!

I know this is kinda a strange topic, but I have a debate coming up and I need some good resources. The topic is- Should marijuana be legalized for medical purposes? Unfortunately, Im on the Aff, so I say "Yes", but I really dont know much about it. Does anyone have any resources or arguements on it? Thanks

Its not really homework, i just wanna know that answer. I need to solve for X, given the following information. Its a square, and no angle information is given, apparently its a quadratic equation. If you work it out, a explanation would be great. Thanks.

i was wonderin if someone could get some information regarding a classaction suit involving women over 40 being unjustly fired/run off from their jobs by the columbia-sussex (corp? inc?) specifically from the river palms casino in laughlin,nv filed during the last week of sept of this year.publicised** not filed** printed in the las vegas revue journal during the last week of sept 2004 *other las vegas based papers may have run similar stories eh..my freind needs this info for her mom...so im going around seeing how many ppl can help... i know there probably arent many law school students or grads here...but *any* help is greatly appreciated thankx

ok theres two cannons ones at an 90 degree angle and theres another one exactly half of the angle. They are both shot a the same muzzle velocity. Which hit the ground firt. I think its both but some of my friends say the 90 degree will hit first. Any ideas formulas or answers? And if you have the answer could you show some proof?

I know this may seem like a bit of a dumb question, but which units are Capillary Length and Molecular Separation measured in, regarding Cappilary Zone Electrophoresis? Full names instead of abbreviations would be appreciated if possible.

I'm doing a report on PAP smear tests. Anyone has good books/textbooks/websites to recommend? Help is greatly appreciated

Can some1 quickly plug the following data into a graphics calculator and plz tell me if u reckon the data graphs a parabola or a normal distribution curve? Production Statistics Year Ended: 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Straits Share: 3795, 7059, 7671, 9708, 10578, 10317, 7353, 6642, 2110, 1858 becoz I thought it's a parabola at first but then you cannot get any negative values ever (all positive integers) in the data so I thought it might then be a normal distribution curve. which 1 is it or is there another possible type of curve that fits the graph betta?

I'm doing a science project and I just noticed that i overlooked a very big part of it. My project is on words affecting a person's sense of taste, and I've gotten research and replies from this forum already. I forgot to ask HOW. So, if anyone has any links to any site that tells you HOW, or anyone knows, I'd really appreciate it if you could share. Thank you.

ok so we have to explain some results from an experiment where beetroot discs are placed into different concentrations of oxygen. Here they are: concentration of o2 2.7 12.2 20.8 Relative absorbtion of -K+ 22 96 100 I don't really understand this and would appreciate some help!!! Thank you for your time.

Sorry if this has been asked before, we've got a lab tomorrow, we have to take some different hydrate compounds and heat them up with a bunsen burner. We are supposed to figure out a way to know if all the water has been driven off, I just can't think of anything...besides until the compounds start burning, and that isn't good Is there a trick with temperature? I'm very puzzled Thanks in advanced for some hints Edit: So I've thought up heating it slowly, and by looking around on the net, keep weighing it till it stays at that constant weight...I think that's it. Might be a better way though.

Latly i havent been able to find anything that is current with science and i as hoping somone had an idea of what current events have been going on in science plus im in 9th grade so dont come up with anything too complicated ok.

I am currently doing an essay on this topic. However I have came to a problem. I can't seem to find any info on which part of acetaminophen that reacts and performs the analgesic function. Is it possible to give me few hints on this? (It has a chemical formula of C8H9NO2) Also, a lot of sources indicate the lack of reaction of COX-1 and COX-2 to acetaminophen. And some suggest COX-3 is the key. Since it is first made known to public in 2002, not a lot of info can be found. Can anyone point me to the right direction for searching for its info?

Can some1 plz tell me that apart from m = Q x e.c.e = density x V, is there another way of finding the thickness of the layer of copper that is deposited on the cathode during electrolysis? (when u already know the density of Cu, the surface area of the anode, voltmeter and ammeter readings at a particular time and Q). By the way, i am in grade 12 in QLD, Australia so plz dont tell me something complex learnt from uni. thanx (oh...if u think there isn't or if u know for sure there isn't then can u plz tell me)

"Assess the effects of sunspot activity on the Earth's power grid and satellite communication." That is something along the lines of what I need. All I need are some webpages that may answer the above statement. If you may know a good site that includes this information please put it down for me! That is all I need!! Much Appreciated..!