The correct answer is:
X, Z, Y, W
Because:
W= 0.19 g/cm3
X=2.4 g/cm3
Y= 0.67 g/cm3
Z=1.89 g/cm3
Density is the relation between the mass of a body and the volume that this body occupies
The formula would be: d=m/v
d: density
m=mass
v=volume
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