I need to choose one of these five topics to do a group project about. Which is easiest? I was going to choose 2 but honestly I don't understand any of these concepts at all.. afterall this is day 1 of the class. Thanks. The project is to make an 'experimental design' of these topics:

PLEASE CHOOSE THE EASIEST
1: Buffers, Mixtures, Calculations
2: Chemical Equilibria Using Le Chatelier’s Principles
3: Kinetics: 0, 1st, 2nd, Order Reactions with Initial Rate and Integration Methods
4: Batteries, Fuel Cells, Corrosion, Electrolysis, Galvanic Cells
5: Radioactive Decay, Geiger Counter Methods to measure Radioactivity, Half-Life.