Posted by Harold on .
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 CiCi and SdSd bonds are known, but not the CiSd bond.
Bond Bond Energy (kJ/mole)
CiCi 245
SdSd 191
JR ??
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 CiSd bond? Please give your answer in kJ/mol.

chemistry 
Harold,
Any ideas??

chemistry 
Anonymous,
2.296

chemistry 
Ne grow,
Ne grows in the haus

chemistry 
Harold,
Anonymous, your solution is wrong. Could you give me a hint of your steps?

chemistry 
hello,
whats the answer

chemistry 
Random,
Use the equation:
delta(w)= 2w(AB)w(AA)w(BB)
delta(w)= 44.6
(AA)CiCi=245
(BB)SdSd=191
44.6 = 2w(AB)(245)(191)
w(AB) = [44.6  245  191]/2
w(AB)= 195.7
195.7 
chemistry 
guise,
its 195.7