Final answer:
Based on the experiment's results, it is recommended to use ammonium nitrate as the salt in That's Cool's new chemical ice pack. The endothermic reaction of the ammonium nitrate with water provides an effective cooling effect. Considering the energetics of the reaction and cost analysis, ammonium nitrate is a suitable and cost-efficient choice.
Step-by-step explanation:
Based on the experiment, the recommendation to the CEO of That's Cool would be to use ammonium nitrate as the salt in its new chemical ice pack. Ammonium nitrate is known to dissolve in water and undergo an endothermic reaction, which results in a substantial cooling effect. Other salts, such as sodium chloride or potassium nitrate, may also have cooling properties, but they may not be as effective or cost-efficient as ammonium nitrate.
The energetics of the reaction are important in understanding the cooling effect of the ice pack. Endothermic reactions absorb heat energy from the surroundings, which leads to a decrease in temperature. In this case, the ammonium nitrate reacts with water, absorbing heat energy and causing the pack to cool down. This makes it a suitable choice for a chemical ice pack.
In terms of cost analysis, ammonium nitrate is generally affordable and widely available. Compared to other salts, it may be a more cost-effective option for That's Cool. Considering both the energetics of the reaction and the cost analysis, using ammonium nitrate in the new chemical ice pack is recommended.