I'm having trouble solving a puzzle about air pollution in chemistry. Can anyone help?

If a || b and e || f, what is the value of y ?

If you want to create an electrical current, which situation would produce a solution capable of this

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.