I need a science experiment idea for my science horizon.?

Question

My science idea's final draft is due tis Wednesday...I am planning to use 4 tablets and HCl...but I don't know wat to test it for...I dont want to do product testing to see which one dissolves etc....I need something tats new and interesting...someone plzz help me...im desperate!!!!

Answer 1

build a hydrogen fuel cell. when your HCl reacts it will produce hydrogen gas capture it and use it as an energy source.