carefullt complete the energy diagram a crurve that accuratly shows the progress of the reaction, begining at the reactants, mobing through the transition state, and ending final products.

nacl is added to the aqueous of what? ? in order to get a proper answer you have to specify the exact composition of the aqueous solution.

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

level 4 to level 2 : ))