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anonymous

  • one year ago

Which of the following solids would have the highest melting point? A. NH3 B. H2O C. C6H6 D. LiCl

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  1. Photon336
    • one year ago
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    @kristinatime what do you think the answer is?

  2. anonymous
    • one year ago
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    I think it's D

  3. Photon336
    • one year ago
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    interesting, what is your reasoning?

  4. Photon336
    • one year ago
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    @kristinatime tell me your reasoning and I'll walk you through it

  5. anonymous
    • one year ago
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    I'm not sure I just think lithium would create a high melting point, I'm terrible at chemistry so I need help explaining these things /:

  6. Rushwr
    • one year ago
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    Melting point depends on intermolecular attractions and the crystalline structure.

  7. anonymous
    • one year ago
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    Well what do you guys think it is?

  8. Photon336
    • one year ago
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    Thing is (it's melting point not boiling point) so @kristinatime whenever you have to determine whether a compound has a higher melting point, always identify which compound is found in the solid phase.

  9. Photon336
    • one year ago
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    because essentially we're going from solid to liquid i.e. MELTING.

  10. anonymous
    • one year ago
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    Oh okay I'm understanding it a bit better

  11. Photon336
    • one year ago
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    why would the other answers not make sense @kristinatime? could you tell me a little about those?

  12. anonymous
    • one year ago
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    Actually LiCl is a gas element so that wouldn't have a melting point lol so I'm not sure. Water can't melt so it isn't h2o. So...

  13. anonymous
    • one year ago
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    It has to be NH3 or C6H6

  14. Photon336
    • one year ago
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    @kiristinatime dont confuse yourself. remember LiCl is a solid at Room-temperatue. why? because it's ionic, Li is a metal and Cl is a non metal. whenever we have a metal and a non metal the result is an ionic compound. now Water, Benzene, and ammonia are all liquids at room temperature. that's because of the type of bonding too as well.

  15. Photon336
    • one year ago
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    @kristinatime

  16. anonymous
    • one year ago
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    So it would be LiCl?

  17. Photon336
    • one year ago
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    @kristinatime i'll give you another one Which has the highest melting point and why? KCl Cl2 C6H6 H2O

  18. anonymous
    • one year ago
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    So would it be LiCl or no? And hmmmm

  19. anonymous
    • one year ago
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    Not sure maybe C6H6

  20. Photon336
    • one year ago
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    always provide your reasoning

  21. anonymous
    • one year ago
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    I honestly don't know

  22. anonymous
    • one year ago
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    LOL why won't you tell me if I was right on the first question?

  23. Photon336
    • one year ago
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    I believe it's lithium because ionic compounds are solids at room temperature right? because they have an electrostatic attraction. between the metal and non metal. does this make sense?

  24. anonymous
    • one year ago
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    Makes total sense actually

  25. Photon336
    • one year ago
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    so yeah i tried to give you another problem I posted it above

  26. Photon336
    • one year ago
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    so tell me why the others aren't good answers and go through them individually @kristinatime

  27. anonymous
    • one year ago
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    Uhhh idk haha

  28. Photon336
    • one year ago
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    the biggest concept with melting point is that you need to ask yourself what compounds are solids at room temperature right? because solid --> liquid that's what melting is.

  29. aaronq
    • one year ago
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    In order to answer questions like these, you need to know about intermolecular forces, rank these in terms of strength, and be able to identify which compounds have which. |dw:1444054209829:dw| read this http://www.chem.sc.edu/faculty/shimizu/333/Chem_333/2b.i.html

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