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  1. ...it takes extra energy to form the bubble itself: energy to push the water out of the way , and energy to make the surface between water and steam. Once a bubble forms...

    分類:科學及數學 > 化學 2007年10月18日

  2. ...environment. As you can see, the easiest, safest and best ways to keep pollution out of the environment are in your hands. http://www.deq.state.va.us...

    分類:科學及數學 > 化學 2008年02月13日

  3. ...from thick specimens. The basic key to the confocal approach is the use of spatial filtering techniques to eliminate out - of -focus light or glare in specimens whose thickness exceeds...

    分類:科學及數學 > 化學 2007年05月01日

  4. ...prevent heat loss during the experiment. (c)use vacuum flask instead of polystyrene cup. (d)to find out the specific heat capacity of the acid. I hope you will find them helpful.

    分類:科學及數學 > 化學 2007年11月22日

  5. first you should know what is the problem of gases brusting out from the can 2008-01-04 13:36:56 補充: in any... people usually use to increase the rate of disloving of carbon dioxide. i hope i can help you

    分類:科學及數學 > 化學 2008年01月06日

  6. The way of testing you mentioned is rather clumpsy and inconvenient. You can of course carry out a "test" in that way but it cannot give you any instant and visable...

    分類:科學及數學 > 化學 2007年02月10日

  7. ...type of air conditioning. A refrigerator works in much the same way , as it pumps the heat out of the interior into the room in which it stands. This cycle takes...

    分類:科學及數學 > 化學 2007年06月08日

  8. ...22:42 補充: solubility of carbon in silicon been measured over the temperature range 1560 to 2900. enthalpy of solution is 59±3 kcal/mole carried out in argon at pressures 35 atmos. Solubilities of carbon...

    分類:科學及數學 > 化學 2007年07月17日

  9. ...reason AND also, because of temp. of the reaction. To product ester from alcohol... be pushed all the way to the product side. And not enough...constant N2(g) flow to keep the water out of the reaction. 2006-11-01 00:55:53...

    分類:科學及數學 > 化學 2006年11月04日

  10. ...to explain the structure. In case of SO4^2-, we have to ask where this... under room temperature, the sulphate ion exists in...solution. It can form from two differnt ways (maybe more than two but I ...

    分類:科學及數學 > 化學 2009年01月23日