Respostas

A melhor resposta!
2013-09-09T20:11:53-03:00
Q = m * c * /\t

Q = 20 * 15 = 300 calorias

300 = 50*c*(50-20)

300 = 50c*30
300 = 1500c

300/1500 = c

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c = 0,2cal/g*°C
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