Ans :
Heat absorbed by the solution = mass x specific heat x change in temperature
now density = 1.0 g/mL , so the mass of 50 mL of solution will be 50 g
putting all the values :
= 50 x 4.184 x (23.7 - 22.5)
= 251.04 J
= 0.25104 KJ
molar mass of Zn = 65.38 g/mol
mol Zn = given mass / molar mass
= 0.103 g / 65.38 g/mol
= 0.00158 mol
= heat released / mol
= 0.25104 KJ / 0.00158 mol
= 159 KJ/mol
Please answer and provide a step-by-step explanation on how you got the correct answer. (my answer...
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