Which of the following characteristics is part of a good scientific experiment? a) Results can be produced
b) Results are not viewed by peers
c) Results are based on a small sample size
d) Results are based on an undisclosed process or procedure

D results are based on an undisclosed process or procedure

Explanation:

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

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