of heating, filtering, evaporating, or distilling which does the best job at keeping the solvent of a solution?

Please read the following web page carefully for your answer:

http://en.wikipedia.org/wiki/Distilling

To determine which method out of heating, filtering, evaporating, or distilling does the best job at keeping the solvent of a solution, you should refer to the provided web page on distilling from Wikipedia.

Specifically, on the web page, you can look for information about the purpose and process of distillation. Distillation is a method of separating a mixture by heating it and collecting the vapor that condenses back into a liquid. It is commonly used to purify liquids and remove impurities or separate components with different boiling points.

By reading through the web page, you will learn that distillation is especially effective at separating a solvent from a solution or a mixture. It allows the solvent to be collected separately, while any impurities or solutes with higher boiling points are left behind.

In comparison, heating alone does not provide the same level of purification or separation as distillation. It may cause the solvent to evaporate and mix with any impurities or solutes that have lower boiling points, resulting in an unequal separation.

Filtering is a method typically used to separate solid particles from a liquid solution. While it can remove solid impurities, it may not effectively separate the solvent from dissolved solutes in a solution.

Evaporating can help remove the solvent from a solution by converting it into a vapor, but it may still contain impurities unless a subsequent distillation or purification process is conducted.

Therefore, distillation is considered the best method among heating, filtering, evaporating, and distilling to keep the solvent of a solution since it provides a more precise separation and purification.