CHEMISTRY!!!!

[libra94]

can someone plz help me out in question 9
here's the link: http://www.xtremepapers.me/CIE/Internat ... _qp_11.pdf
thanks.

 

[msk]

see first find total energy absorbed by water =200x4.2x(66-18)
now form an equation
(45/100)x E =40320
E=89600 now for per gram divide by 1.6
56000 j

 

[libra94]

thnkss
i was taking the temperature in kelvins