Answer:
2 differet atoms.
Explanation:
Molecule: group of two or more atoms held together by chemical bonds. So, minimum 2 atoms are required to form a molecule.
It has 36 electrons because it electrons are equal to the amount of protons
Assuming that the space within the solid or liquid is vacuum, it is not matter because there is no mass inside. However, there is a volume. The volume inside a solid would have regular straight sides because atoms of a solid is compactly arranged. For liquids, the space could be irregular curves and paths because the atoms in a liquid are free-flowing.
Answer: Option (A) is the correct answer.
Explanation:
According to Le Chatelier's principle, any disturbance in an equilibrium reaction will shift the equilibrium in the direction that will be opposing the change.
For example, in the reaction 
As steam means that water is present in gaseous form. So, here steam is present on the product side that is, right hand side. Hence, increasing concentration of steam will shift the equilibrium on left hand side, that is, on the reactant side.
Thus, we can conclude that in the given reaction adding steam to the reaction vessel will shift the reaction to the left.