Recent content by 8point1

  1. 8

    Predicting Reaction: Ca(NO3)2 + NaHCO3 --> Ca(HCO3)2 or CaCO3 + NaNO3 + H20?

    Homework Statement predict the reaction: Ca(NO3)2 (aq) + NaHCO3 (aq) -----> The Attempt at a Solution Ca(NO3)2 (aq) + NaHCO3 (aq) -----> Ca(HCO3)2 (s) + NaNO3 (aq) OR Ca(NO3)2 (aq) + NaHCO3 (aq) -----> CaCO3 (s) + NaNO3 (aq) + H20 (l) Will Ca2+ + CO32- combine, and H+...
  2. 8

    Sequence e^2/2^n, converge or diverge (easy)

    The sequence diverges, so the series must diverge also, correct?
  3. 8

    Sequence e^2/2^n, converge or diverge (easy)

    Homework Statement does the series e^n/2^n converge or diverge? does the series 2^n/e^n converge or diverge? The Attempt at a Solution I took lim→∞ e^x/2^x and am getting ∞, so it diverges, right? I also used L'Hopital's rule and got the same result. My prof hinted that I was...
  4. 8

    Help with project - Freudenstein equation

    Okay, thanks for your help!
  5. 8

    Help with project - Freudenstein equation

    You're right, I didn't foil the right side. gets confusing with all the sines and cosines. Should that last term be +?
  6. 8

    Help with project - Freudenstein equation

    Thanks for the reply. cool, I see how to get b^2 using trig ID's. But adding the sums of the right hand I'm not seeing the algebra. and seeing how this equation: b^2=c^2sin^2\theta+c^2cos^2\theta-a^2sin^2\phi-a^2cos^2\phi gets to this equation...
  7. 8

    Help with project - Freudenstein equation

    Homework Statement Its easier to see if I link the problem: http://faculty.olympic.edu/jjbrown/documents/ENGR%20111/ENGR%20111%20Project%201%202011.pdf The Attempt at a Solution I don't have a problem finding the answers, but the other steps we need to show are giving me a hard time...
  8. 8

    Thinking about switching from M.E. to Ch.E.

    Thanks for your response! I guess I am looking for experience or thoughts rather than advice. What actually makes it so difficult (aside from just being a challenging major)? Memorizing? Work load? Comcepts? A combination of things? I have a strong work ethic, but I've heard...
  9. 8

    Thinking about switching from M.E. to Ch.E.

    I've been working on my 2 year transfer degree at the local community college in order to head to a 4 year for mechanical engineering. After a few chem classes (which are req'd for ME anyway), I find it really fascinating and kind of fun. I've started toying with the idea of switching to a...
  10. 8

    Steam Engine work application problem

    Please, any help would be appreciated. I'm not looking for an answer, just a push in the right direction. Here's what I've tried to do to start out: -put integral in terms of V -break down Volume values and try to solve for r and h -ratio between starting values: 100lb/in^2 and 400in^3 ?
  11. 8

    Honors pre-calculus homework, help

    How might you get rid of the square roots?
  12. 8

    Steam Engine work application problem

    Our professor didn't say we needed any special formulas or anything - that we should know how to do this from our previous section's lessons. Where do I start? That link shows more variables than I have (I think) like lambda values, etc.
  13. 8

    Steam Engine work application problem

    interesting... now I'm even more confused!
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