HELp please I need this right now <3. 1: In the chemical reaction between barium hydroxide and ammonium chloride, what is: (a) the beginning temperature, (b) the final temperature, and (c) change in temperature?
What kind of reaction was this, endothermic or exothermic?

Explanation:

In this demonstration or class experiment, students observe an endothermic reaction between solid hydrated barium hydroxide and solid ammonium chloride. The reaction produces a liquid that evolves into ammonia gas, with a dramatic drop in temperature to about –20 °C