An atom of singly ionized magnesium has 12 protons in its nucleus. how many electrons surround this nucleus?

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.

Suppose the universe were completely empty except for one object-a solid sphere moving through space of 100 km/s. what sort of path would the object be moving in? explain your answer

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?