What is the AHsol for LiBr → Li+ + Br-? The lattice energy is -734 kJ/mol, the enthalpy of hydration for Li+ is -499 kJ/mol, and the enthalpy of hydration for Br- is –284 kJ/mol. Use AHsoi= -A Hat + AHhydr.
A. 519 kJ/mol
B. -49 kJ/mol
C. 49 kJ/mol
D. 1,517 kJ/mol
ITS NOT A!

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

Can someone me with 1 to 4 plz. fast