Jump to content

folder

Senior Members
  • Posts

    46
  • Joined

  • Last visited

Posts posted by folder

  1. This says otherwise' date=' so who's right? It'd make sense for you to be.. But who knows.

     

    EDIT: I think I have a solution. Please tell me if I'm right. The way I see it, theres a lot mre Cu than Ni in the crude metal. So Nickel if oxidized. When the Nickel Runs out, the Cu is then oxidized. Once all the Ions are in the solution, there is no lack of Cu2+ Ions, therefor the Nickel is never reduced. Is this correct? If it is, it looks liek I jsut answered my own question, and that feels good. Of course it proll isn't right.[/quote']

     

     

     

    Yep, that's about right.

  2. If you can remove it and if it is a pure metal (no iron or other metals attached that cannot easily be removed), you could place it into a tank of water that is completely full, and collect the amount of water that is displaced out of the tank. Then, weigh the object, and the mass divided by the volume of water it displaced will be its density, which you can compare to the densities of Aluminum (2700kg/cubic meter) and Magnesium (1738 kg/cubic meter).

  3. question for you budu' date='

     

    if you have a bucket upside down in the ocean, and you bubble CO2 into it, so now you have an upsidedown bucket of CO2, and you tie a weight on the handle so it sinks.

     

    How deep will it sink before the CO2 turns into liquid?

     

    or if that doesnt happen what do you think happens

     

    I am picturing the water temperature as somewhere between 4 and 6 celsius once you get deep that is.[/quote']

     

    Well, CO2 will liquify at room temperature at about 800-900 Pounds per square inch pressure.

  4. You might want to take apart some batteries to get the carbon rods in the center to use as electrodes, because if you use copper or iron electrodes, they can react with the oxygen produced to make copper or iron oxides which muck up the solution (which may also be why you only get one stream of bubbles, the oxygen is reacting with the electrodes). The carbon should be relatively nonreactive, at most making CO2 which is a gas and therefore not going to muck up the solution.

  5. For non-scientific measurements, I like the old system. Mabye it's just because I grew up with it, and am familiar with it. Quarts, Pints, Cups, Tablespoons, and Teaspoons are convienient for cooking, the mile is nice for distances, weight in pounds, and Fahrenheit degrees are nice. I would really have a hard time adjusting to the metric system for those kinds of things. Scientific measurements are a different thing, and the metric system is very nice for them.

  6. what that really happens in water,i wear my watch in the bath which isnt water proof,could it burn my wrist..i fail to see the reference to drugs though who would want to eat lithium batteries for a high

     

    I'm sure the batteries are well sealed because if they weren't, just the oxygen in the atmosphere could oxidize about all the lithium in the battery away to Li2O in a matter of hours or days.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.