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Answer :
Final answer:
To determine how much mercury can be frozen using dry ice and the change in entropy for dry ice and mercury
Explanation:
a) You can calculate the amount of mercury that can be frozen by comparing the heat that dry ice can transfer to the heat required to freeze the mercury. The heat transferred by dry ice can be calculated using the formula Q = mL, where m is the mass and L is the latent heat. For CO2, the latent heat of sublimation is 628 kJ/kg. Then, compare the heat transferred by dry ice to the heat required to freeze mercury, which is given by Q = mL, where m is the mass and L is the latent heat. For mercury, the latent heat of fusion is 11.3 kJ/mol. By converting the mass of dry ice to moles (using the molar mass of CO2), you can determine how much mercury can be frozen.
b) The change in entropy can be calculated using the formula ΔS = Q/T. Compare the calculated change in entropy for dry ice to the change in entropy for mercury to determine which undergoes a greater change in entropy.
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