Homework Help

First off, allow me to introduce myself. I'm a student at the University of Waterloo in Waterloo, Ontario, Canada. I was in the International Development program for a couple years but left because it was a very poorly designed program. In the fall I will be starting the Biotechnology/Economics Co-Op program. Anyway, I've been reading my Cell Biology textbook to get a head start. Just finished the third chapter, which kept talking about "energetically favourable" and "energetically unfavourable" reactions. Is energetically favourable synonymous with exothermic? Is energetically unfavourable synonymous with endothermic? If not, how are they different? If so, why ar…

why after throtlling steam gets superheated???any explanation???

what is the relation between pv and ts diagram.what i trying to say is if a pv diagram is given then how can i assume the ts diagram from it?????

why adiabatic process is called isentropic. we know disorder or any change makes entropy to change.then how adiabatic process keeps entropy constant .a clear explanation will be appreciated.

Hi everyone. I am an author, currently working on a young adult series about a boy who has total control over his autonomic nervous system (he can control his heart rate, flood his system with adrenaline, heal himself, grow nerves, etc.). In this universe, there are a select number of people who share his abilities, but this boy is the only one who can regenerate nerves in the central nervous system. Of course, I have to take liberties with fact to make these things "true," but I'm trying to base my explanations in science as much as possible. In explaining why this boy is different from his peers (why he can regenerate, say, nerves in the spinal cord as opposed to ju…

i have this circuit a)while the battery is connected what is the voltage of the capacitor b)how long after the battery has disconected will the capacitor have a voltage of 1/10 of the initial one?. can you tell me how to work it out? for question a) i try to find the equivalent resistance ,by combining R1 R8 (in series) and R4 R2(in series). Can i then combine R1R8-R4R2(parallel)?Any ideas?

Hi, I have a few q's about human parasitology: 1. What is the body site of infection for Sarcocystis tenella. I know that they are found in the striated muscles, but in my textbook (Markell and Voge's Medical Parasitology on p. 149), it says that they can be found in the small intestines in the lamina propria part of man. Is the Meischer tube in cattle/pig only, or in man also? 2. What is the name for the brain of cestoda? Is it mortarium? My professor didn't spell it clearly on the board. thanks a bunch!!

Hi everybody, I am studying about intestinal flagellates right now. What is the difference between trailing flagellum and posterior flagellum? Is there any difference? Glowstar

I am going to make a project about smoke turning it to liquid and i am going to use the concept about smoke liquid but the product is used for flavoring . Any ideas how to purify it and remove the flavor in a simple way

How a unstable lithium nucleus with z=3 and A=11 gains stability??what is the mode of decay and why that mode is preferred over the other mode of decay??

[math] f(x)=x^2 [/math] How do I go about finding the area under x=[0,1,2,3,4]?? I'm a beginner at definite Integrals so please make an easy explanation. Thanks!

How many primary alcohols, which 3.7g releases 560 cm3 H2 in reaction with Na, are there? I tried to find Mr of alcohol, but I can't get the right solution.

A sample of impure Magnesium is reacted with diluted Sulphuric Acid to give the respective salt and Hydrogen.If 1 gram of impure sample gave 298.6 cc of Hydrogen at STP.Calculate the % purity of the sample (MAgnesium = 24,Hydrogen = 1)

In our degree program we have been asked to do an assignment based on "how effective today's multimedia additional hardware on a pc" and to create a kind of huge report. Following are the things that our lecturer explained us... 1 - To find a video that has at minimum one hour duration. 2 - Download a video converter (encoder/decoder) that allows modifying default configurations. i.e : MMX , MMXTEXT, SSE, SSE2, SSE3, SSE4 3 - Input the video (found in item no 1) to the software and calculate the time taking to complete the encoding process with minimum configuration. 4- Then improve the configuration of the s/w a bit more and record the time again. And like wise d…

A guy is riding a cycle. Radius of the wheel of the cycle is 27 cm. If the revolutions made by the cycle is 600. Calculate the distance traveled by the cycle by covering 600 revolutions?

I have a test in 3 days. Basically its about Carbon Dioxide and related. Also the Oxide Magnesium experiment. Any useful links? Im stuck with the schooltext book, a computer and a science encyclopedia. {Edgy[]Alien}

Hi, How will I know whether a molecule is nonpolar or polar???? Also, why is it that, even though some of the molecules have polar bonds it can also be a nonpolar molecule????

Calculate the mass of impure KOH needed to make up 1.20 L of 0.60 mol/L KOH(aq)? Assume the impure KOH is 84% KOH by mass and 16% water. mimpure KOH=?...........84% VKOH=1.20L CKOH=0.60 mol/L H2O=16% I tried to do this but i don't think this is right, I don't know what should I do first... nimpure KOH=m/M= 84/56.1056 = 1.497 mol nH2O= m/M = 16/18 = 0.89 mol How to solve this??

i want to know true answers of my homework question<attachment removed> . please see the attachment for three more questions.. (a) For three random variables X, Y and Z, draw any graphical model in which we have P(X, Y) = P(X) P(Y), but we do not have P(X, Y | Z) = P(X | Z) P(Y | Z). (b) Do we always have a graphical representation for a given set of conditional independence rules? That is, the representation shows exactly the given C. I. rules, no more, no less. Is the representation unique?

During high tide the water depth in a harbour is 22 m and during low tide it is 10m(Assume a 12h cycle). Calculate the times at which the water level is at 18m during the first 24 hours. My solution: I found the cos equation: H(t)=-6cos(π/6t)+16 then.. Let π/6t=Θ 18=-6cosΘ+16 18-16=-6cosΘ Θ=1.230959417 Let Θ=π/6t π/6t=1.230959417 Then I don't know what's next....

for the titration of 25.0mL of 0.20M hydrofluoric acid with 0.20M NaOH, determine the volume of base added when pH is 2.85?

I have a huge assignment to complete and I don't understand these questions can someone Please help me out!

a parallel plate capacitor has plates of dimensions 20cm by 20cm seperated by 2mm. The dielectric constant of the material between the plates is 5 and the plates are connected to a voltage source of 500V. calculate (a) the capacitance, (b) the charge on either plate, © the energy density, and(d) the total energy stored in the capacitor.

what this equation means h=hf+x*hfg what is the physical meaning of dryness fraction.

If you place a DNA of a mouse, mRNA of a rabbit, ribosomes of a hydra and tRNA of a human in a test tube, and place it in optimal conditions for translation to occur, which imitate the conditions inside cell cytoplasm, you will get a polypeptyde chain of which animal: mouse, rabbit, hydra or human?