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18 January, 07:45

I don't unerstand what I'm supposed to do for these

Heat = mass * c * temp change

175g 0.79J/gC 75 C

Heat = mass * c * temp change

352g 1.65J/gC 25 C

Heat = mass * c * temp change

268g 4.18J/gC 40 C

Heat = mass * c * temp change

74g 0.21J/gC 67 C

These are the answers I'm supposed to match with each one

1.04kJ

10.4kJ

14.5kJ

44.8kJ

+4
Answers (1)
  1. 18 January, 09:10
    0
    You just need to multiply the terms and transform to kj by dividing by 1000

    1) 10.4kj

    2) 14.5 kj

    3) 44.8 kj

    4) 1.04 kj

    and there you go.
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