Which is chemical property of vinegar

What is the mass of 8 moles of sodium atoms

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?

How do you determine the percent yield of a chemical reaction