If3.91 potassium metal is allowed to react with oxygen,
O2, the reaction yields 7.11g of k2o.
How much oxygen was reacted?

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

The rate constant for the reaction below is 6.2 x 10−5 mol l−1 s −1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?

What is happening when the water inside a kettle heats up and begins to boil