The variables for this experiment include the physical properties of the solutions and the pH of each solution. Use the drop-down menus to complete the sentences and identify the independent and dependent variables.

Answer
Independent-Physical property
Dependent-The Ph of the solution

its first and third is your answer i did the qustion the fourth isnt right

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