Match the following solutions in column A with their descriptions in column B. Column A
Li3PO4

Ba(OH)2

NH3

HCOOH

HBr

C12H22O11

Column B
A. Turns red litmus paper blue and is very conductive

B. Turns blue litmus paper red and is very conductive

C. Has a pH less than 7 and is slightly conductive

D. Has a pH greater than 7 and is slightly conductive

E. Has a pH of 7 and is a non electrolyte

F. Has a Ph of 7 and is conductive

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3