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Theloshua

  • one year ago

A 20 gram piece of metal is added to a sample of 100 grams of water inside a calorimeter. If the metal is at a temperature of -5° Celsius and the water is at 20° Celsius, which of the following best describes what will occur inside the calorimeter?

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  1. Theloshua
    • one year ago
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    -The final temperature of the water will be 15 degrees Celsius -The energy gained by the metal equals the energy lost by the water -The final temperature of the water will be higher than the initial temperature -The temperature lost by the water will equal the temperature gained by the metal

  2. taramgrant0543664
    • one year ago
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    Well we can cross off c, the metal is colder then the water so the water will go down in temperature not up

  3. taramgrant0543664
    • one year ago
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    We also know that it can't be D, this is because there is different masses involved and there will different heat capacities therefore the temperature lost and gained will not equal each other Do you have an idea of which one it is between a and b?

  4. Theloshua
    • one year ago
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    I thought it would be a....

  5. Theloshua
    • one year ago
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    I knew c couldnt be right...

  6. Theloshua
    • one year ago
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    you there?

  7. taramgrant0543664
    • one year ago
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    The thing with that answer though is that we don't know the metal and therefore we don't have the heat capacity for it

  8. Theloshua
    • one year ago
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    im also realizing d isnt an option either XD

  9. taramgrant0543664
    • one year ago
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    Sorry it froze for a minute there

  10. Theloshua
    • one year ago
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    why does it matter? It's not asking a calorimetry equation...

  11. Theloshua
    • one year ago
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    n its okay

  12. taramgrant0543664
    • one year ago
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    The answer is b because qgained=qlost Where q represents the energy

  13. Theloshua
    • one year ago
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    wait.....

  14. Theloshua
    • one year ago
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    oh, cauz it adjusts and equals out to the same temperature?

  15. taramgrant0543664
    • one year ago
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    Yes they will have the same end temperature but it's not nessicarily the half way point between them

  16. Theloshua
    • one year ago
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    *sighs* Im confused...

  17. Theloshua
    • one year ago
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    ......?

  18. taramgrant0543664
    • one year ago
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    The energy lost by the water is the same as the energy gained by the metal. Both the water and metal will end at the same temperature. It could be any number between 20 and -5 depending on the conditions of the reaction and unless you know all conditions you can't specifically say a temperature and chances are it's not going to be the half way point between the two temperature so it won't be 7.5 Celcius

  19. Theloshua
    • one year ago
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    ohhhhh, and theres no way of calculating that without knowing what the metal is?

  20. taramgrant0543664
    • one year ago
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    Exactly!!!!

  21. Theloshua
    • one year ago
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    okayyyyyy thats so simple haha, i feel stupid now. Your amazing!!! :*

  22. taramgrant0543664
    • one year ago
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    It's no problem at all and don't feel stupid I thought NaOH was apparently a salt when I know it's a base because I was thinking NaCl, so you're not stupid at all

  23. Theloshua
    • one year ago
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    haha, thats a more intelligent slip up then mine :D

  24. Theloshua
    • one year ago
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    may I ask where your experience is from? Like how do you know this stuff?

  25. taramgrant0543664
    • one year ago
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    I'm going into my third year as a chemistry major

  26. Theloshua
    • one year ago
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    ohhhh, okay, thats cool, idk how you do chemistry constantly... :p you find it fun?

  27. taramgrant0543664
    • one year ago
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    I absolutely love chemistry it's the one thing that clicked with me in high school, this first semester back I have 30 hours of chem a week so I get to do a bunch of really fun labs that a lot of people would rather bang their head against the wall instead of do but I find them fun

  28. Theloshua
    • one year ago
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    haha, thats really cool :D

  29. Theloshua
    • one year ago
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    well I fanned you so I will definetely contact you in the future if I'm having problems ;) Im new to open study, but I like it alot so far

  30. taramgrant0543664
    • one year ago
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    It's pretty good here I've been on for about 50 days now and I've been on every day helping some one I find it enjoyable!

  31. Theloshua
    • one year ago
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    youve been here 50 days and have almost 200 fans? O.o

  32. taramgrant0543664
    • one year ago
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    There's people that have been on for less time and have more

  33. Theloshua
    • one year ago
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    okay, i guess haha your pretty btw ;D I tend to not let guys help me, It makes me uncomfortable, idk why *shrug*

  34. taramgrant0543664
    • one year ago
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    Everyone has their own preferences

  35. Theloshua
    • one year ago
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    yepp...

  36. Theloshua
    • one year ago
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    anywayyy... Ill leave you alone now and let you do our thing :D hanks again!!

  37. Theloshua
    • one year ago
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    your*

  38. Theloshua
    • one year ago
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    thanks*

  39. taramgrant0543664
    • one year ago
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    Haha no problem anytime!

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