chemistry
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.

Any ideas??

2.296

Ne grows in the haus

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

whats the answer

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 
its 195.7