We know that density = mass /volume
so
mass=volume*density
volume=mass/density
so c is wrong
Answer: To be able to not forget what have they done when they want to re-do it.
to make it easier for the next person to re-do the experiment.
Explanation:
the description of the procedure ensures that when the experiment becomes of a success,specific steps are recorded for improvement of the experiment if maybe the experiment can be done at a short space of time.
Group 4A
The elements in group 4 show the most diverse set of properties.