Respuesta:
[tex]calor = (200gr)(1 \frac{cal}{gr \: c} )(40c - 20c) = 4000cal = 4kcal[/tex]
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Respuesta:
[tex]calor = (200gr)(1 \frac{cal}{gr \: c} )(40c - 20c) = 4000cal = 4kcal[/tex]