Explanation:
Mg₃N₂ is the formula of magnesium nitride.
What’s the question sweetheart...?...There’s no question or picture to answer
It is a statement of fact. explains how energy is produced, and describes the behavior of energy.
Complete Question
The complete question is shown on the first uploaded image
Answer:
The concentration of high-pressure side is 
Explanation:
From the question we are told that
The thickness of the polyethylene is 
The temperature is 
The flux is 
The concentration on the low-pressure side is 
The initial diffusivity is 
The activation energy for diffusion is 
Generally the diffusivity of the oxygen at 600 K can be mathematically evaluated as
substituting values
Generally the flux is mathematically represented as

Where
is the concentration of oxygen at the higher side
So

substituting values

