An education guess or rational explanation about a specific phenomenon

Me with these questions if you’re it sure don’t answer

When a gasoline engine burns gasoline, what type of chemical reaction is occurring?

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?