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Renee99

  • 2 years ago

A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation? A. The bonds between hydrogen and oxygen atoms are very strong. <<My Answer B. The electrons in the atoms attract the electrons in the other atoms. C. Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. D. Water molecules near the surface produce more buoyant force than water molecules within the liquid.

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  1. Renee99
    • 2 years ago
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    I think the answer is A, is that correct?

  2. karan.singh
    • 2 years ago
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    i think renee u r wrong...

  3. karan.singh
    • 2 years ago
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    ya its right ..a option is correct u r right...according to http://answers.yahoo.com/question/index?qid=20100706102709AAqiYmG

  4. Renee99
    • 2 years ago
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    Well, My second choice was D...

  5. Renee99
    • 2 years ago
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    ???

  6. karan.singh
    • 2 years ago
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    i don't know the reason

  7. ash2326
    • 2 years ago
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    Nope a is not correct, it's D. I'm thinking of a proper explanation

  8. karan.singh
    • 2 years ago
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    ash can u explain it..

  9. DLS
    • 2 years ago
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    It is due to surface tension,they have to occupy minimum area,that is related with buoyant force,hence D. A,C&B are potinless options.

  10. experimentX
    • 2 years ago
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    the cohesive force is stronger than adhesive force .... the intermolecular bond between water molecule is stronger than intermolecular bond between surface and water.

  11. ash2326
    • 2 years ago
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    On a waxy surface such as a leaf, Water adheres weakly to leaf and strongly to itself, so water clusters into drops. Surface tension gives them their near-spherical shape, because a sphere has the smallest possible surface area to volume ratio. Source- http://en.wikipedia.org/wiki/Surface_tension

  12. Renee99
    • 2 years ago
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    Ahhh, okay. I gotcha! :)

  13. Renee99
    • 2 years ago
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    Thanks u guys!

  14. karan.singh
    • 2 years ago
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    ok. concept of surface tension

  15. Renee99
    • 2 years ago
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    I have another quick question... A scientist adds heat to each of the following substances. Which will probably absorb the most heat before its temperature changes significantly? 50 g of solid copper 50 g of solid iron 50 g of liquid water<<My answer 50 g of sand

  16. experimentX
    • 2 years ago
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    if A had talked about hydrogen bond, i would have gone for A.

  17. DLS
    • 2 years ago
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    Post seperately

  18. Renee99
    • 2 years ago
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    okay, will do

  19. DLS
    • 2 years ago
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    hydrogen bonds are merely simple attractions,you cant relate them with shape of a molecule

  20. Renee99
    • 2 years ago
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    thanks again everyone!

  21. experimentX
    • 2 years ago
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    surfaces matter .. for some surface the water molecule does not form dome ... while for some surfaces forms smaller dome.

  22. DLS
    • 2 years ago
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    and yes thhe answer to your second question is water,since it has thehighest specific heat capacity

  23. Renee99
    • 2 years ago
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    http://openstudy.com/study#/updates/507ee9efe4b0599919843e2f

  24. Renee99
    • 2 years ago
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    ohh thanks :)

  25. Renee99
    • 2 years ago
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    u don't have to follow the link then...

  26. hotdog97
    • 8 months ago
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    did you get both answer right ?

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