Write out the balanced equation for the reaction that occurs when li and h2o react together. you do not need to make your subscripts smaller; just write them out as regular numbers. for example: h2o.

Li + H2O →  LiOH + H2 

The equation is currently unbalanced, so to balance it out, you have to have the same number of each molecule on each side. It'll look like this: 

2Li + 2H2O → 2LiOH + H2 

Also, in case you want to identify the phases as well, it'll be like this: 

2Li (s) + 2H2O (l) → 2LiOH (aq) + H2 (g)

"s" is solid. 
"l" is liquid. 
"aq" is aquas. 
"g" is gas. 

Sink to the bottom. addition of potassium nitrate past it’s dissolution capacity at a particular temperature will cause the extra to just sink to the bottom of the glass.however, if you were to raise the temperature of the solution prior to dissolving it, and then slowly decrease the temperature after the dissolution, you would create a “supersaturated” solution - a solution that has more solute dissolved into it than should be allowed. if you add any extra solute past this, the entire solution would “crystallize,” and this is how you get those cool videos on youtube.

0.4 j/gcplug in known variables to specific heat equation