Pls help i dont understand at all

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.

Define dew point. i am writing this part to be able to ask the question

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work