What state of matter has the highest entropy?

What is the subscript for oxygen in its molecular formula

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?