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30-12-2022
Chemistry

Answered

he element gallium (Ga) freezes at 29.8 ∘C, and its molar enthalpy of fusion is ΔHfus=5.59kJ/mol. When molten gallium solidifies to Ga(s) at its normal melting point, is ΔS positive or negative? Calculate the value of ΔS when 70.0 g of Ga(l) solidifies at 29.8 ∘C. Express the change in entropy in joules per kelvin to three significant digits.

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