Answer:
r = k [ B ]
Explanation:
⇒ r = k [ A ]/2 = k [ B ]
An increase in motion and less attraction between particles
Answer:
The concentration is 
Explanation:
From the question we are told that
The absorbance is 
The length is 
Generally absorbance is mathematically represented as

where
is the molar absorptivity of FeSCN2 with a value 
and
is the equilibrium concentration of FeSCN2
So

substituting values


The answer is metal. Metals are always named first in ionic compounds, like KNO3 for example. I hope this helps!