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  • Chemistry Help please :/

    Discussion in 'Over Age 35' started by parnassto, Oct 9, 2012.

    1. parnassto

      parnassto Well-Known Member

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      he heat of the solution of ammonium nitrate is 26.2 kJ/mol. If a 5.368 g sample of ammonium nitrate is added to 40.0 mL of water in a calorimeter at 23.5 degrees celcius, what is the minimum temperature reached by the solution?
      given specific heat of water= 4.18 j/g C, and heat capacity of calorimeter =650 J/degrees celcius


      can you show me the steps? :/
       
    2. defelqy

      defelqy Well-Known Member

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      Chemistry Help please :/

      The answer is easy, its cabbage.
       
    3. emininojiq

      emininojiq Well-Known Member

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      Chemistry Help please :/

      Helped a lot, thanks.
       
    4. masoven4u

      masoven4u Well-Known Member

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      Chemistry Help please :/

      Don't mention it.
       
    5. crormaSoila18

      crormaSoila18 Well-Known Member

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      Chemistry Help please :/

      Dude, you are on the right track. Continue to lift heavy and take a good multi. Ensure you are getting enough sleep.
       
    6. remstation

      remstation Well-Known Member

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      Chemistry Help please :/

      Didn't you just post this in the main forum?

      What do you think will happen to your system? Do you think the temperature will rise, will fall, something else? In other words, what units will your answer be in and what will the sign be? What magnitude of an answer would make sense? A change of 450,000,000 C, 0.00000000000001 C, a few degrees C?

      You're putting a known amount of energy into a system of known mass (water is given in volume so convert it to mass) and known heat capacity (water + calorimeter), and known initial conditions. Carry your units through and you can't help but get a reasonable answer.

      And, based on the earlier post, use the proper significant figures and always put units after your numbers.
       
    7. parnassto

      parnassto Well-Known Member

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      Chemistry Help please :/

      OP, are you asking for help to build a bomb?
       
    8. baletki

      baletki Well-Known Member

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      Chemistry Help please :/

      I figure at some point our society will deteriorate to the point that students have to go through a security check to take freshman chemistry... a security clearance to take organic. Education is dangerous.
       
    9. masoven4u

      masoven4u Well-Known Member

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      Chemistry Help please :/

      Unless he is trying to fertilize a field, my limited knowledge of ammonium nitrate leaves me with no other assumptions.
       
    10. herunder88

      herunder88 Well-Known Member

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      Chemistry Help please :/

      This was about the extent of my interest in chemistry:



      I was very interested though!
       
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