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  1. D

    Voltaric Cell/Cell Chemical Reaction

    B is true as well as E, thank you for your help
  2. D

    Voltaric Cell/Cell Chemical Reaction

    positive ions that were removed from the cathode
  3. D

    Voltaric Cell/Cell Chemical Reaction

    updated this with the pic....and the second half reaction
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    Voltaric Cell/Cell Chemical Reaction

    Homework Statement Which of the following are true statements about the above voltaric cell and the resulting cell chemical reaction ? a) The zinc electrode is the cathode b) Zinc will be consumed before copper c) Electrons flow from the copper electrode to the zinc electrode d) The half...
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    Vapor Pressure of Water

    Homework Statement The vapor pressure of water at 25.0 C is 23.8 torr, and the heat of vaporization is 43.9 kJ/mol. What is the vapor pressure (atm) of water at 59.8C? Homework Equations Clausius-Clapeyron equation. ln(P2/P1)=(ΔH/R)((1/T1)-(1/T2)) The Attempt at a Solution P2=? P1=23.8...
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    Name of Alkane [Pic Included]

    so the longest chain has 8 carbon atoms, with an ethyl group coming off the 3rd atom, and a methyl group coming off the 5th atom. SO... 3-ethyl 5-methyl octane ?
  7. D

    Name of Alkane [Pic Included]

    Homework Statement Enter the name for the above alkane. Homework Equations How to count Carbons and Hydrogen's. The Attempt at a Solution My answer was "Undecane" because I counted 11 Carbons and 24 Hydrogens but it says im wrong. Any Idea?
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    Fundamental THM of Calc?

    yess, thanks a lot once again appreciate your patience, and 2 thumbs up from me lol
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    Fundamental THM of Calc?

    so now this means [ going back to the original problem] that since: h(t) = ef(t) and h'(t) = f'(t)*ef(t) h'(t) = a(t)*eA(t) -A(c) ?????
  10. D

    Fundamental THM of Calc?

    ok well since its a constant then like you said the derivative is zero. [ i wasn't grasping the whole a(c) is a constant part] which leaves the derivative of f(t) = a(t) only? and i appreciate you being patient with this, i probably would of stopped helping by now :yuck:
  11. D

    Fundamental THM of Calc?

    well since A'(t) = a(t) then wouldn't the derivative of f(t) just be A'(t) and A'(c)? so: f(t)=A(t)-A(c) f'(t) = a(t) - a(c) ? **The main problem is Im in Calc C and all this stuff was stuff I did in Calc B, which was all the way back in Feb.**
  12. D

    Fundamental THM of Calc?

    alright, this isn't really helping [maybe I'm just not getting it] but thanks for trying, appreciate it.
  13. D

    Fundamental THM of Calc?

    ya I understand that, part 2 of the Fund thm of calc. but can u please explain your whole process on what your doing here cause your just pulling out these rules which still don't help me understand the process of setting this up.
  14. D

    Fundamental THM of Calc?

    so basically f(t) = Integral from c to t of a(s) f(t) = a(t) - a(c) then f'(t) = ??
  15. D

    Fundamental THM of Calc?

    Homework Statement Heres the question: f(t) = Integral from c to t of a(s)ds, and h(t) = ef(t) Compute h' (t) using: 2 fundamental theorems of Calculus and The Chain Rule any help please ? Homework Equations Fundamental Theorems of calc g(x) = Integral from a to x of f(t) dt...
  16. D

    Differential Equations PLEASE

    aww, such a simple mistake, thanks a lot :)
  17. D

    Differential Equations PLEASE

    i turned tan(x) into sinx/cosx and canceled out the cosx, and was left with -sin^2 x + cos^2 x + sinx + sin^2 x -cosx = cos^2 x any ideas?
  18. D

    Differential Equations PLEASE

    Differential Equations PLEASE!! **problem solved**
  19. D

    Electrons in GRAMS

    ya I got the problem fixed it wasn't my answer that was wrong it was a technical error. Thanks for the help guys !!
  20. D

    Electrons in GRAMS

    no its fill in the blank, but it specifically says "IN GRAMS" and "WITHOUT UNITS" and since the first part I got right with only 3 sig figs, I thought that was my problem here, but it was still wrong. Help please.
  21. D

    Electrons in GRAMS

    its a quiz online, tells me whether im correct or incorrect Any more help guys ?
  22. D

    Electrons in GRAMS

    tried that and got 4.366556698 and was still wrong even using only 3 sig figs Help please
  23. D

    Electrons in GRAMS

    Electrons in GRAMS :( Homework Statement Part1: A sample of electrons is found to have a total charge of -7.68 x 10^8 C. How many electrons are in this sample ? =================================== Part 2 says: What is the mass of the above sample of electrons in grams ...
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