The answer is <span>increasing the surface area of Fe(s) and increasing the concentration of HCl(aq).
the rate of reaction can be increased if the interaction between the reactants in better. by increasing the surface area of a solid, such as Fe, you make more possible each molecule of Fe to interact with HCl. Also, by increasing the concentration of HCl, it mean there is more molecule of HCl to interact with Fe.</span>
It means that <span>the cell loses most of its water from osmosis when put in a hypertonic.
Hope that helps!</span>
Group 18 is known as the Noble/ Inert Gases
