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17 April, 15:33

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid?

silver

sulfur

water

lead

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  1. 17 April, 18:52
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    Answer: The correct answer is Silver.

    Explanation:

    Specific heat of fusion is defined as the amount of heat which is required to raise the temperature of 1 gram of a substance to 1°C. It is generally expressed in kJ/mol

    We are required to find the substance which require more heat. For that we need to know the specific heat of all the substances.

    The substance which have the highest specific heat, will require more heat.

    The specific heat of the given substances are:

    Silver = 11.3 kJ/mol

    Sulfur = 1.7175 kJ/mol

    Water = 5.98 kJ/mol

    Lead = 4.799 kJ/mol

    The specific heat of silver is the highest and hence, will require more heat.

    Hence, the correct answer is silver.
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