yellanialmomayaY yellanialmomayaY

14-07-2016
Chemistry

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10.0 grams of octane are burned in a bomb calorimeter containing 2.00 × 102 g h2o. if the water temperature increases from 25.00oc to 37.00oc, how much energy was released by the system?

Respuesta :

daniel987 daniel987

14-07-2016

ΔH=MCΔT
M : the mass of water (2.00x10^2)
C : water specific heat capacity (4.18 or 4.2)
ΔT : tempreture change
so energy (J) released into the water is = (200 x 4.18 x 12) = 10032J
you can convert that to KJ : 10032 / 1000 = 10.032KJ

so the energy released by 10g of octane is 10032J or 10.032KJ

hope that helps

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