Answer:
The rate of reaction of magnesium with hydrochloric acid. Magnesium reacts with dilute hydrochloric acid in a conical flask which is connected to an inverted measuring cylinder in a trough of water. The volume of hydrogen gas produced is measured over a few minutes, and the results are used to plot a graph.
Explanation:
This is from dictionary: <span>a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
I would say it is 2</span>
Because the molecular solutions have low melting and boiling points, and do not conduct electricity.
