Answer: a. solution
Explanation:
A solution is a mixture which contains two or more than two types of components and they can be separated by physical means as well.Example: salt water
Molecule of an element is defined as the aggregate of atoms of similar elements. Example: 
. Molecule of a compound is the aggregate of atoms of different elements in a fixed ratio by mass. Example: 
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example: 
A pure substance is a substance which contains definite composition of only one type of component. Hence, it cannot be separated by physical means. Example: Helium, water
Answer:
P2I4 is otherwise known as "<em>Diphosphorus Tetraiodide</em>"
<span>2.188*10^23 atoms of iron
6.022*10^23 atoms/mole
(2.188*10^23 atoms of iron)/(6.022*10^23 atoms/mol)~.3633 moles of iron
Hope this helps!</span>
Most of metallic elements prefer being oxidized. At this form, they are most stable. In the case of aluminum metal, its stable form is aluminum oxide. Aluminum ion has +3 charge while an oxygen ion has -2 charge. By cross interaction, it will form Al2O3.
The results are considered more reliable, based off the fact that when other scientists redid his experiment they found similar results but it’s not enough evidence to be more
