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January 31, 2015

Homework Help: chemistry

Posted by Harold on Tuesday, November 12, 2013 at 11:54am.

Two new metallic elements have been discovered, Cimium (Ci) and Sadowium (Sd). Both the pure elements and their solutions form simple cubic lattices. The bond strengths of the Ci-Ci and Sd-Sd bonds are known, but not the Ci-Sd bond.
Bond Bond Energy (kJ/mole)
Ci-Ci -245
Sd-Sd -191
J-R ??

Mixing a solution of 40% cimium and 60% sadowium is an endothermic process. According to your calorimeter, the solution draws 44.6 kJ/mol of heat when mixed. What is the strength of the Ci-Sd bond? Please give your answer in kJ/mol.

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