anonymous
  • anonymous
It takes 2.52 × 10^5 J of heat to melt 4.00 kg of a substance. According to the table (attached inside!), what is the substance? copper, iron, silver, or gold **not sure! thank you:)
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
Michele_Laino
  • Michele_Laino
we have to find the heat capacity
souvik
  • souvik
well...find the amount of heat needed to melt 1 kg of substance

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Michele_Laino
  • Michele_Laino
so we have to compute this: \[\Large C = \frac{Q}{m}\]
Michele_Laino
  • Michele_Laino
where Q=2.52 × 10^5 J and m= 4Kg
anonymous
  • anonymous
okay! so 2.52 * 10^5 / 4 = 63000 ?
Michele_Laino
  • Michele_Laino
ok!
anonymous
  • anonymous
so that means 6.3 * 10^4? so our substance is gold?
Michele_Laino
  • Michele_Laino
that's right!
anonymous
  • anonymous
yay!! thank you:)
Michele_Laino
  • Michele_Laino
thank you!! :)

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