The species h3+ is the simplest polyatomic ion. the geometry of the ion is that of an equilateral triangle. given the following information 2h + h+ → h3+ δho = −849 kj/mol h2 → 2h δho = 436.4 kj/molcalculate δh for h+ + h2 --> h3-

Explanation:

From the question, we know that;

2H+H^+ >H^3+, ∆H°=-849 kilojoule per mole (1).

H2 >2H, DH° = 436.6 kilojoule per mole (2).

Adding the equation (1) and equation (2) above gives another equation of reaction, which is;

H2 + H^+ > H^3+ (3)

∆H° = [-(849) - (+436.4)] kilojoule per mole.

∆H°=[-(849) - 436.4] kilojoule per mole

∆H= - 1,285.4 kilojoule per mole

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