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andie

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About andie

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  1. Hey! I am doing an experiment of electrolysis with initially a copper strip attached to the negative terminal of a battery. A strip of aluminium is then attached to the positive terminal and both electrodes are placed in a copper sulfate solution. My observations are only that oxygen gas is formed on the aluminium electrode while in the solution, but no real reaction occurs. When i switch the copper strip to the positive terminal and the aluminium strip to the negative terminal I see that copper has been deposited on the aluminium. What are the reactions for these two options????
  2. lol it is a very easy question... possibly inserted to make everyone feel smart... i know it makes me feel smart:)
  3. andie

    Titrations

    actually for this titration i need to know the volumes of the sodium acetate and acetic acid that will make a pH of 5.0 and 4.70. I know that sodium acetate is 1.0 M and acetic acid is 1.0M with a volume of 15.0 mL ... Therefore how would you calculate the volume of sodium acetate needed when you have the volume of acetic acid?
  4. there is this program called Rasmol... not sure if it will help... here is a link to my professor's website with a link to download it.. its under Rasmol program http://www.chemistry.lakeheadu.ca/mackinnon/1110/Chap22.html
  5. andie

    Buffers

    is any one going to help????
  6. andie

    Titrations

    Hey! I am doing a titration and I need to find out what the pH is. I need to combine sodium acetate and acetic acid together. What are the products of this reaction... is it water and what else????
  7. andie

    Buffers

    Hey! I was wondering what are a couple of buffer systems in our everyday life besides our blood????
  8. Hey! I am doing a chem pre lab and i need to calculate the equilibrium concentrations. I know how to do this but i need help balancing the equation. The reactants are H2O2 and Na2S2O3 (both aqueous) and i believe they go to NaO and H2SO4 ???? Are those the right products. Could someone help me please!!!!
  9. is some one going to help me ????
  10. andie

    Parallel Plates

    force = mass that acceleration therefore it would be the mass of an electron multiplied by gravity and the distance is given Is that about right ????
  11. if an electron was released from rest from the negative plate, what is its speed right before it strikes the positive plate? How to solve it ? Does anyone know a formula to solve it ?
  12. andie

    Are these correct?

    wouldnt it be the other way around as in if it loses 2 electrons it would be +2 thats how i was taught
  13. andie

    Parallel Plates

    I was doing an experiment with some parallel plates and was wondering how much work is done by the uniform electric field by moving an electron from the negative plate to the positive plate of two parallel plates. How would you solve this???
  14. for #14 you can take the cosine and sine of 45degrees and then solve for x and y . Very simple once again what level of study is this if you dont mind me asking... im guessing highschool???
  15. #13 is just using c^2 = a^2 + b^2 and solving for x and y ! Very simple!
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