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Question
The skeletal structure in line-angle (linc-bond) mode of 2-isopropyltoluene is shown. Identify the number of hydrogen
atoms bound to each carbon atom in the structure.
Answer Bank

yes it is balanced

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

the answer is d.) potassium