URGENT What is the AH soi for LiBr - Li+ + Br-? The lattice energy is –734 kJ/mol, the enthalpy of hydration for Lit is -499 kJ/mol, and the enthalpy of hydration for Br- is –284 kJ/mol. Use AH sol = -AHiat + AHhydr.
A. -519 kJ/mol
B. -49 kJ/mol
C. 49 kJ/mol
D. 1,517 kJ/mol
IT'S NOT A!!!

the answer would be b i believe

the answer is 0.42 is that is an option. this question provides no info

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.