What is the percent by mass of a solution in which 60, of are dissolved in sufficient water to make 100 g of solution?

Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?

What is the rate law for the uncatalyzed reaction?

If you need to add 27.50ml of a solution, which piece of glassware would you use to deliver this volume and explain how you would determine if the 27.50 ml was measured?