posted by Mark .
When investigating heat of solution of NaoH& NH4No3, what is the heat of solution of the two cpds?
You are asking for the value of two heats of solution that you should get by doing an experiment, real or simulated. Do that experiment following the instructions you were given. To get an idea of the values you should expect, do a search with a search phrase such as "heat of solution of NaOH".