What is the volume of a 200. gram sample of gold if its density is known to be 20.5 g/cm3?

The volume  of  a  200 g sample  of  gold    is   9.76  cm³

calculation

  volume = mass /density

mass =  200 g

volume = 20.5 g/Cm³

volume  is therefore = 200g / 20.5 g/cm³  = 9.76 cm³

the volume increases

weight of any object is given by

w = m*g

where m is mass of the object and g is the acceleration due to gravity.

for earth the value of g is 9.8 m/s^2 so

w=117.6 n m=12 g=?

117.6=12g => g=9.8 m/s^2

which is the force of gravity on earth.