<u>Answer:</u> The value of 
for the equation is 
<u>Explanation:</u>
The given chemical reaction is:
The chemical equation for which the equilibrium constant is to be calculated follows:
As, the equation is the result of the reverse of given reaction. So, the equilibrium constant for the equation will be the inverse of equilibrium constant for the given reaction.
The value of equilibrium constant for the equation is:
We are given:
Putting values in above equation, we get:
Hence, the value of for the equation is
The characteristic of atoms is
They are the smallest units of matter
<u><em> Explanation</em></u>
Atoms are the smallest constituent units of matter and they have properties of chemical elements.
Atoms can not be broken by any chemical means.
Atoms of an elements combine together to form compound.
In addition atoms consist nucleus of positively charged protons, neutral neutrons with negatively charged electrons.
The answer is C :
It controls the entry and exit of substances.
Answer:
Are transferred completely from the valence shell of an element to the other
Explanation:
Basically, to form a chemical bond, you either transfer or you share. When you share, it is a case of covalent bonding which can be in several other forms. When there is a transfer, it is a case of ionic bonding.
The basic explanation for this is that while some atoms are electronically sufficient, some are electronically deficient. This means while some atoms are having an excess number of electrons, then some are having less number of electrons.
To satisfy both parties, there must be a transfer if electrons between the two parties. While the one with the excess numbers serves as the donor, the one with insufficient number of electrons serve as the acceptor
