The answer should be law of conservation of energy
Answer:
Heat of solution= - 63KJ/mole
Heat evolved = - 18.82KJ
Explanation:Heat of solution = Heat of solute + Heat of hydration
◇Hsoln = - ( - 7.3 × 10 ^ 2) + ( - 793 ) KJ / mol
◇H soln= - 63 KJ
Use enthalpy of solution equation to determine the enthalpy of solution for LiI
LiI ---> Li^ + + I^-
Molecular mass of LiI=133.85g
The chemical equation for the dissociation will be:
40gLiI (1molLiI)/133.85g LiI - 63KJ/1 mol LiI
18.82KJ
The heat was evolved because the value of enthalpy was negative
Understanding the theory of plate tectonics can make people more prepared if a natural disaster occurs. By understanding the theory of tectonic plates, you can possibly predict when the next tectonic-plate related natural disaster will occur.
Answer:
C
Explanation:
consider thermodynamics - heat is transferred from a warmer system to a cooler system. this is why m&ms melt in your hand when you hold them in your palm: your body heat is transferred the the m&ms, causing them to melt.
go back and review endothermic and exothermic reactions, that will help :)