Find the mass of 3.89 mol of NaF​

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

What is avogadro’s number, and why is it useful

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.