Place the following substances in the following order: soluble, somewhat soluble, and insoluble.

a.
sand, sugar, cornstarch

b.
sand, cornstarch, sugar

c.
sugar, cornstarch, sand

d.
sugar, sand, cornstarch

How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal