Considered this question: what is the mass of solute in 200.0 l of a 1.556-m solution of kbr?
(a) outline the steps necessary to answer the question
(b) answer the question

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?