speny

https://www.dropbox.com/s/de3b96ab7v72nn3/standard...

the entirety of the questions is in the link above. I would not do it justice to rewrite it.

Basically where I am confused is that they claim the solution is written right there in #1 but im not seeing it.

it says DrG=nEf E is the potential thus E=DrG/nf but when using his values it doesent even come close. then in #2 he says subtract the standard potential of Fe (i.e. 0.77) but in #1 the say DrG=0.77

what on earth is this stuff

I realize there is a short cut to do this with linear algebra but ive been told Ill get no marks if I do that so I need to figure this out the long way...

Find the volume of a parellelpiped V=<5,-1,3> W=<-2,2,1> compute Y=VxW then find the volume

So I did VxW and came out with Y=<-7,-21,8>

And I have a formula which says Vol= |A•(BxC)|

this all seems simple enough but I have no idea which is equivalent to A B or C...this has come up a couple times where i have generic formula but dont know how to use it with what i am given. Probably because i hate math and dont understand what im really doing with this stuff

trying to find the lenght of the arc for y=1/2(e^x+e^-x) for 0<x<1

we know that

s=Int[(1+(dy/dx)^2)^1/2]dx

dy/dx=1/2e^x-1/2e^-x

sooooo

(dy/dx)^2=1/4e^2x -e +1/4e^-2x

i guess i need to take (1/4e^2x+1/4e^-2x-e+1)^1/2 but i cant figure out how to do that....am i even on the right track? this made so much more sense when they stuck to normal things like y=2x^2 haha

if you could please give the most detailed walk through of this as you can I have a solution guide but its skipping steps and i cant make sense of it.

Thanks

What does it mean? I know what 'greater then or equal to' means which I have always seen as > with a single line underneath and now all of a sudden its a double line

it looks like > stacked on top of =

where as i am used to seeing > stacked on top of _

Ok so I am trying to evaluate net and total distance vor v=sin(t)+cos(t) on the interval [0,pi]

net distance i have no problem and total distance i know how to find but am stuck on one part.

I need to know where v(t) is positive and negative so i need to find its roots but how on earth do i solve sin(t)+cos(t)=0

The radioactive isotope U-238 decays by first order kinetics. For this decay the rate constant has the value 0.154My^-1 (1My=mega year=1 million years) How long will it take for 10% of a given sample to decay?

I dont even know where to begin with this and Im having trouble making sense of all this A,A* Koa ln exp stuff in my text.

If you work in front of the house, service staff, doorman, hostess etc., and get cut early its fairly common to stick around and have a drink or two (unfortunately not an on the house "shift drink" at this place). What do you think about tipping the bartender who you just got done working with?

one one hand, yes, everyone should get tipped. on the other hand you work together for the same shitty hourly wage/tips...

I live and work in the US a little more then 6 moths a year, and am required to have my registration/license/insurance from a certain state. However when i am not working I reside in British Columbia the other 5 or so months (dual citizenship) and go to school full time. Having talked with ICBC I am fine to drive on an out of province license and Insurance provided I maintin full time status.

Where I am having a problem is that my US insurance policy wont cover me in canada, from what ive found none of them will outside of small tourist visits. However, BC insurance and registration wont allow me to work when in the states. It seems ridiculous to have to change my registration and insurance every 6 months. Also ICBC seems to be a big hassle to get anything sorted out.

Im wondering if anyone has experience residing back and fourth as I am doing. I seem to rember something about temporary residency 6 months less a day in Canada....which makes me think my situation is common enough there must be a solution other then spending tons of money and a big pain to change info every couple months.

The velocity of blood at a valve in the heart of a rodent is modeled by the equation v= -4cos(6piT)+4

where v is in centimeters/sec and T is time in seconds. just want to make sure i understand this correctly.

A) what are the max and min velocities of blood at the valve?

min 0cm/sec max 8cm/s right? the +4 shifts it up 4 units with an amplitude 4 so 0-8 are max and min?

B) What is the little guys heart rate in beats/min?

the period is 2pi/6pi = 1/3 so 1 beat takes 1/3 second = 3beats/sec * 60 sec/min = 180beats/min

Is this correct. is the little guy about to have a heart attack?

the instructions for these questions say "find aprox. values of each expresion, round to four digits"

#29. tan(1.55)

#31. cot(-3.48) etc.

my question is how am i supposed to know if im using rad or deg on the claculator. there are no pi's and no deg symbol?

Ok this is driving my crazy, theres this button on my calculator that looks like A(b/c) or in 2nd mode d/c this is the button used to turn ridiculous decimal answers into fractions....but it doesent always work.

For example im working on this problem and i get to the point i need to figure out what

-1/2(-1/3)^2 - 1/3(-1/3) = i punch it all in there and get 0.0555555....i hit the fraction key and nothing! Ive been told these types of answers are not appropriate and it needs to be in a fraction of sorts...I look it up in the back of the book and the answer is 1/18, which turns out is 0.05555555.....

so I entered it in correctly in the first place, why doesnt the button do anything. other problems it works fine....also, if it doesnt work how on earth would i get this into fraction form. my algebra/general math is pretty rusty and im not sure how one would do that by hand.

Thanks

I have a photsmart all in one. I know the ink carts have some sort of chip in them and that it says to only use new HP products and all. However, when I lived in the states (and also when I was working in mexico) there where businesses that could refill the carts and they would do something to the chip so it would still reflect the ink levels.

Now that I am in Canada (Victoria) I can only find one place (island ink) that will refill them but they claim to not be able to do anything about the chip; thus, my printer never knows what the ink level is. It displays a question mark on the level and is becoming a huge pain.

Am i just SOL being in Canada? I find that hard to believe that Canada would be less technologically advanced as Mexico or the US. Im back in university and printing tons of stuff and cant really afford to go get a $40 cart every time one runs out.

Any one have suggestions.

what kind of products might i have that i can break to find these guys? what applications do they have in everyday life?

Addition of HCl to an alkene forms 2-chloropropane. what is the alkene?

Ok, I know its CH3-CHCl- CH2-CH2-CH3.....the answer im provided with just says 'propene'

However when i drew it out it looks like it could be 1 or 2, cis or trans propene. Am i missing something or is it so general that you cant determine the 1/2 cis/trans?

For the diagram shown in the link http://i1068.photobucket.com/albums/u451/speny/sca...

Im familiar with how to calculate this for say an n=3 to n=1 change with the formula for DeltaE

However I have never seen nor can i find an example problem where they go to or from infinity

It asks what the transition is from the ground state i.e. N=1 to N=infinite.....or at least i think thats what line Z is.... So this would be ionazation energy of completely removing the electron. thus the experimentaly determined value listed for ionazation energy?

part C) asks which transition represents the reaction H+ (+) e- ----> H(ground state)?

Is this just the opposite of my above question? is this what electron affinity is?

So the stuff in my text book seems to name things such as 4-methyl-cis-2-hepten (the cis/trans being in the middle) However, the study guide I have has stuff in the multiple choice answers where it is slightly different i.e. trans-4-methyl-pentene

I have an exam on monday and the prof is not answering emails, Im just wondering is there a preffered style? I know she gets really anal about naming (she did not write the study guide or i would just go with that)

im torn between what a text book says and what a different professor from a couple years ago wrote...what do you guys think

Please have a look at the image http://i1068.photobucket.com/albums/u451/speny/sca...

For part C I can usually figure out how these things go together, by looking at it like a puzzle and figuring what makes sense to remove/join and the remaining products.

but for parts A & B I am completely lost. Why do these stupid diagrams never indicate what the byproduct is....is it missing OH- H2O. Also, as you can see from the green and orange brackets im not really sure where to break this polymer.

Any explanation in the most basic idiot laymen terms would help a ton.