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

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.