What are two ways that solutes affect the properties of solvents?

Which term refers to a property that depends only on the amount of a substance? ©@

Predict the products butane (c4h10) + oxygen —>

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?