How is stoichiometry used to calculate energy absorbed when a mass of solid melts?A.Grams solid × mol/g × HreactionB.Grams solid × mol/g × HfC.Grams solid × mol/g × HfusionD.Grams solid × mol/g × HvapSUBMITarrow_backPREVIOUS
Question
How is stoichiometry used to calculate energy absorbed when a mass of solid melts?A.Grams solid × mol/g × HreactionB.Grams solid × mol/g × HfC.Grams solid × mol/g × HfusionD.Grams solid × mol/g × HvapSUBMITarrow_backPREVIOUS
Solution
Stoichiometry is used to calculate the energy absorbed when a mass of solid melts by using the formula: Grams solid × mol/g × Hfusion.
Here's the step-by-step process:
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Convert the mass of the solid into moles. This is done by dividing the mass of the solid by its molar mass (mol/g).
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Multiply the number of moles by the heat of fusion (Hfusion). The heat of fusion is the amount of energy required to change one mole of a substance from the solid phase to the liquid phase at constant temperature and pressure.
So, the correct answer is C. Grams solid × mol/g × Hfusion.
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