Density of Ice = 0.917 gm/ml
volume of ice per gram= 1/density = 1/0.917 = 1.0905 ml/gram
Volume of water = 1ml/gram
Change of volume when 1 gram of ice changes to water = 1.0905-1 ml
= 0.0905 ml
Total change in volume = 0.210 ml
Weight of ice changed to water = 0.210/0.0905 gram
= 2.320 gram
Energy released = weight of Ice to water*Ice enthalpy of fusion
=2.320*333 J
= 772.56 Joules
Mass of weight reacted to release 772.56 joule of energy = 0.0857 gram
Energy released per gram of metal = 772.56/0.0857
= 9015 Joules/gram
= 9.02 KJ/gram
AS ENERGY IS RELEASED SO SIGN OF ENTHALPY WILL BE NEGATIVE
SO H(REACTION PER GRAM) = -9.02KJ/gram
Hence answer is option A) -9.02 KJ/gram
Can someone help me, I dont know how to approach this question. Thank you so much....
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