Lewis Structures of Ammonium Ion (RED) and Chloride Ions (BLUE) are attached below.
Lewis structures are those structures which shows the environment of electrons in a molecule. These structures basically depicts the bonding electrons and non-bonding electrons also known as Lone pair electrons.
In attached structure it can be seen that the ammonium ion is made when nitrogen atom is forming four single bonds with four hydrogen atoms and the formal charge on nitrogen becomes +1. While, in case of chloride ion the chlorine atom has four lone pair of electrons and has a formal charge of -1.
a gas exert a pressure of 6.20 atm in a container with a volume of 475.2 ml will exert a pressure of 9.150 atm when transferred to a container with a volume of 322 ml
Explanation
This is calculated using the Boyles law formula
that is P1V1= P2V2
P1=6.20 atm
V1=?
P2=9.150 atm
V2= 322 ml
by making V1 the subject of the formula
V1= P2V2/P1
V2 is therefore = (9.150 atm x322 ml) / (6.20 atm-) = 475.2 ml