In two or more complete sentences explain how to balance the chemical equation and classify its reaction type.

___NaI + ___Pb(SO4)2 ⟶ ___PbI4 + ___Na2SO4

Much of the general structure and physical properties of the interior of the earth are inferred from: a)deep oil and gas bore holes b)geologic investigations c)analysis of seismic waves d) study of volcanoes

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons