Consider the following data for calcium: atomic mass 40.078 electronegativity el

Question

Consider the following data for calcium: atomic mass 40.078 electronegativity electron affinity 2.37 ionization energy 589.8 heat of fusion 8.54 mol 1.00 kJ mol kJ mol kJ mol You may find additional useful data in the ALEKS Data tab. Does the following reaction absorb or release energy? O release O absorb O Can't be decided with the data given. (1) Ca(g) Ca (s) Is it possible to calculate the amount of energy absorbed O yes or released by reaction (1) using only the data above? O no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): kJ/mol O release O absorb O Can't be decided with the data given. O yes Does the following reaction absorb or release energy? (2) Ca+(g) + e- Cale) Is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (2): kJ/mol

Explanation / Answer

(1) Energy is ABSORBED to add one electron In case of Ca

So answer is ABSORBED

YES , energy can be calculated.

Energy is absorbed 2.37 kj/mol

2. RELEASED

YES

Energy released 588.8 KJ/mol

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