The correct theory is that the way gravity is pushing them into the middle of earth which makes them the way they are
Answer:
2CrO3-->2Cr2O3--->3O2
d=4.5 g/cm³
Explanation:
v=l x w x h
v=2 x 3 x 2.5
v=15 cm³
d=m/v
d=67.5/15
