Is an impurity in many mineral ores and can cause acid rain when it escapes during the smelting process.
a. arsenic
b. cadmium
c. lead
d. sulfur

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.

How many atoms are there in 5.70 mol of mg

Which process describes vaporization that takes place below the surface of a liquid? condensation melting boiling evaporation