Answer to Question #179712 in Physical Chemistry for Mahnoor baig

Question

I have given some data where mass of can =41.5 g ,Mass of water=220.0g, initial temp water = 29.3C, final temp water & Al=33.9C, Mass can,water,Al=276.1, initial temp Al= 21.1 .. Calculate heat gained by water & can. Where specific heat of can 0.920J/gC. & Specific heat of water= 4.184J/gC . formula given is Qw= MwCw(Tf-Ti) , QC=McCc(Tf-Ti) ..Question: 2 find total heat of water & can absorbed by metal ingot ; Qtot= Qw+QC.. Question: 3 find specific heat capacity of metal ingot. Here as energy released from metal ingot so Qtotal will be negative ; -Qtot,= MmCm(Tf-Ti).. This last question is difficult for me

Answer 1

1.Heat gained by water and Can ;

=13.2kJ

2.Total heat of water & can absorbed by metal;

=16.7kJ

3.Specific heat capacity ;

=2.94kJ