contestada

How many joules of heat are evolved by a reaction in a calorimeter where the temperature of the bomb and the water increases from 19.50°C to 22.83°C? The bomb has a heat capacity of 650.0 J/°C, and the calorimeter contains 320.0 g of water.

Respuesta :

kenmyna

The number  of joules  of heat  that are evolved by  a reaction  in a  calorimeter  is  692,640  joules


calculation

Heat= MCΔT   where,

 M(mass)=  320.0  g

C ( specific  heat  capacity)= 650.0  j/c

  ΔT ( change in temperature) = 22.83-19.50= 3.33  C

heat is therefore=  320.0 g  x 650 j/c   x 3.33 c =692,640  joules