Homework Help

I have a 5uM Concentration of primer stock. I need to find out how many nanograms/Microliter i have in this stock soltion. Any help appreciated! thanks

For the first time in AP Bio, I have hit a massive road block that I just cannot step over. We are up to Genetics (chapter 14 in Campbell/Reece) and I do not get it one bit. I cannot do probability for the life of me, and I am just stressing so much. The textbook didn't teach me anything, along with my teacher who gives bad lectures. Are there any online resources that greatly outline the basics of Genetics (just Mendel and the gene idea). I would love a bunch of visuals that show all the crosses and everything. Thank you so much.

How do I show that [math] a_n = \left( 1 +\frac{1}{n} \right)^{n} = e [/math]

How do I go about finding all the solutions to [math]x^4-8x^2+17=0[/math]?

I thought it might be avian bird flu since it's written that it's a fairly recent pathogen and is also prevalent in Thailand. However, the neurodegenerative symptoms don't match up. Could anyone help me make a diagnosis?

Alrighty, I was doing my homework and I ran across this problem that I can't figure out, just cyber slap me if this is a really dumb question. It takes 585 J of energy to raise the temperature of 125.6 g of mercury from 20.0*C to 55.1*C. Calculate the specific heat capacity and the molar heat capacity of mercury. :confused:

500 millilitres of acetic acid is in solution and is then diluted yielding a 5 percent solution. What is the volume of said solution. (Note Concentration of acetic acid is 17.4 mol/l). V1C1 = C2V2 500ml x 17.4 mol/l = 0.05 g/ml x V2 This is what I have for an equation but I think I took a step in the wrong direction. Help?

After the copper is formed, there is a precipitate left over i think this is Al(OH)3 but i can't explain why any help? also, why does it release hydrogen gas?

I am working in infinite sequences and I forgot something simple. What the rules for taking the derivative for a function such as this: [math] \left(\frac{3}{2} \right)^{x} [/math]

I am trying to figure out what determines which nitrogen bases form pairs in DNA?

I know Gamma ray has more energy, but I'm not sure why. Can someone explain it to me? I need to know this for a test on Tuesday.

hey, I'm doing a project on dry cell batteries. I understand that there are formulas and what-not, but how does it produce electricity??? ...same question for the Gratzel cell. and if you have any sites that may aid my project, dont hesitate to share it

I just can't find this reaction... My teacher said that the stochiometry of this reaction is 1 Na2B4O7 . 10H2O + 1 HCl. We did titration of HCl with borax... but I wonder the products. Could you help me?

A bucket of water is swung in a vertical circle. Explain qualitatively why the water in the bucket does not fall out. My model answer then explained that If the speed of the rotation is high enough, the weight of the water alone in the bucket is not enough to provide for the centripetal force required. A force will be exerted by the bottom of the bucket on the water for the water in the bucket to continue to move in a circle. By Newton's third Law, the water pushes against the bottom of the bucket and thus stays in the bucket. What does the bold text really mean? So what happens if the weight of teh water alone in the bucket is just enough? And if my speed …

Is Computer science science? Can anyone give me a direction on how to tackle this qns??

I can see with no eyes, i can hear with no ears, i can smell with no nose, i can feel with no nerves, what am i?

ok im doing this question and i am totally lost. once again got the Q&A but no working out so i cant follow the steps to HOW they got the answer. So here it is Ammonia is produced in the Harber Process under conditions of high pressure and moderate temperture. If 13.05L of an equilibrium mix at 550'C (823K) and 200kPa presurre consists of 3.00 L of nitrogen and 9.00L of hydrogen and 1.50L of ammonia calculate teh density of (g) mixture.. im not sure where to start or what formulas to use.

hello everyone i need help on a question, i have part of it done adn its correct but to get the rest it not working, this is what i have so far Propane is the major LPG constiturnt, assuming that a 17.60g sample is all propane calculate A) number of propane molecules B) number of carbon atoms C)number of hydrogen atoms propane= C3H8 A) M(c3h8)=44.09gmol-1 n=m/M = 17.09/44.09 =0.40 moles of propane n=N/6.02x10(23) N=0.40x 6.02x10(23) = 2.408x 10(23) B) n©=N/6.02x10(23) = 12.01x 6.02x10(23) = 7.23x10(24) .. the answer says 7.22x10(23) which im not sure what i am doing wrong and i can not get the c…

So I'm really confused about what the side products would be if you dehydrate 2-methyl-2-butanol by using sulfuric acid as a catalyst. I know that there will be 2 products: 2-methyl-2-butene (major) and 2-methyl-1-butene (minor). But what about side products? I don't know how to determine which side reactions are possible. Any help would be appreciated! Thanks in advance.

Hello. I got a math problem. ( It should be easy for most of the people. Even me but i missed the class when they were looking at that) On a chess tournament every chess player played one time with every one. in total there were 45 chess games held. How many players were there? I just can not figure out what i should use and how to find the number of players. EDIT: I allready got it. I have to use Combinations formula and it all works out Before i just could not find the right way to use it. But still if someone got good ideas to use for this i'd like to hear them.

What happens when we react [MATH]\text{H}_2[/MATH] with [MATH]\text{O}_2[/MATH]? What is the product, and why? Thanks in advance! (Sorry if this isn't in the right forum. I'm not sure if this is classified as HW Help or General Chemistry.)

Hey guys. Okay, hehe, funniest story ever - I am having a few time issues with my 2 advanced phys classes, I had to end up choosing which one I put my time in and which I am just cruising through, getting my expected F (probably) and doing again (we have an "F Drop" policy, where if u do it again your F is replaced). In any case, we had an exam on the class I "gave up" on. Among other things, I'm having difficulties with the math (I'm just now studying the beginning of it in the math course), so I REALLY didn't expect to do well. As it turns out, no one did very well. I have no idea what my grade is (probly bad) but from my talk with other people in class, I did f…

Hi everyone, im half way through an essay on explaining the formation of tissues and have got confused! the question is really all in the title, is there any difference between cell differentiation(or tissue differentiation) and mitosis? please help! thankyou in advance.

Ok so if i am given 3 different esters such as methyl difluoroacetate, methyl 2,2-dimethylpropanoate, and methyl acetate how do i go about determining which one has the fastest rate (largest rate constant) of saponification?

Hi, Okay. The question is how many moles are there in 2.107 * 10^24 water molecules. Now I'd say something like 10 because the Avogadro Number is 2,022 * 10^23 and because 10^24 is a lot more then 10^23... But is there a precise way of doing this? I know this question may seem a little bit stupid but sorry...Just started chemestry :D Thanks in advance