How many valence electrons is each element trying to obtain?

What is the relation between concentration of reactants and the rate of chemical reaction?

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.

Which compound contain an iron with a 3+ charge