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anonymous

  • one year ago

I need help someone!!!!!! Gold medal is waiting. you are a research chemistry for your experiment; the temperature of water bath needs to be 37 degrees celsius.The temperature gauge shows that it is currently 20 celsius.if you set the heater on the bath so the temperature rises 3 celsius every 15 minutes, about how long will it take for the water bath to reach the required temperature?

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  1. Vocaloid
    • one year ago
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    set up a proportion

  2. Vocaloid
    • one year ago
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    first find out how many degrees the temperature needs to rise

  3. Vocaloid
    • one year ago
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    still there?

  4. anonymous
    • one year ago
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    yes sorry, i'm working it out now and will show you if itsc orrect

  5. anonymous
    • one year ago
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    ok soi did it like this...

  6. anonymous
    • one year ago
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    |dw:1444501800294:dw|

  7. Vocaloid
    • one year ago
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    not quite

  8. Vocaloid
    • one year ago
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    the final temperature is 37, but we start at 20. so how many degrees does it need to increase by?

  9. Vocaloid
    • one year ago
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    (hint: replace "37" with "37-20" in your proportion and solve for x)

  10. Vocaloid
    • one year ago
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    |dw:1444502097676:dw|

  11. anonymous
    • one year ago
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    oh isee ok hold on a sec

  12. anonymous
    • one year ago
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    |dw:1444502187743:dw|

  13. anonymous
    • one year ago
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    so an 1hr and 42 min

  14. Vocaloid
    • one year ago
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    uh, not quite.

  15. Vocaloid
    • one year ago
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    |dw:1444502316614:dw|

  16. Vocaloid
    • one year ago
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    |dw:1444502343151:dw|

  17. anonymous
    • one year ago
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    yes i got 85 minutes

  18. Vocaloid
    • one year ago
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    right, and 85 minutes = 1 hr and 25 minutes

  19. Vocaloid
    • one year ago
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    (there are 60 minutes in one hour)

  20. anonymous
    • one year ago
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    yes true. i guess i'm usedto o ver doing a problem lol. thanks for your help :)

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