Arrange these molecules in order of decreasing mass: C6H14 , NO2 , Fe2O3 , and CaCO

The following is the arrangement of the given molecules in decreasing order of mass:

Solution:

First inorder to arrange the elements in descending order of their mass we have to calculate the molecular mass of each element. The calculation is as follows:

Mass of C6H14:

Mass of C6H14 is 86.172

Mass of NO2:

Mass of NO2 is 46.0055

Mass of Fe2O3:

Mass of Fe2O3 is 159.6882

Mass of CaCO:

Mass of CaCO will be 68.0874

So, the order will be which is

fe 55.85 g/mol and h2o 18.02 g/mol.