science

How many calories will it take to raise the temperature of a 36 g gold chain from 20°C to 110°C?

asked by zee
  1. heat=mass*specific heat capacity*changeintem
    changeintemp=90C
    specificheatcapacitygold=0.129 J/gC
    but one Joule=0.239 calorie , so
    specificheat capacity gold= = 0.0308 cal/gC
    mass=36g
    do the math.

    posted by bobpursley
  2. My answer is 1.1088 because the specific heat capacity gold times the mass, is that the right answer.
    0.0308 times the mass of 36 g

    posted by zee
  3. No, that isn't correct. What did you do with the change in temperature of 90 C?

    posted by DrBob222
  4. Ok, I tried 0.0308 times the mass of 36g divided by 90C, I got .0516, is that correct? Not sure what to do? Thanks

    posted by zee
  5. Multiply by change in Temp. * means times. I get near 100 Joules

    posted by bobpursley
  6. 137, I just multplied

    posted by zee
  7. 0.0308 x 36 x 90 = ? calories

    I don't think that's 137.

    posted by DrBob222
  8. I got 99.792, then rounded to 99.8

    posted by zee
  9. Got it! Thanks

    posted by zee

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