Answer:
29 L.
Explanation:
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In this case, considering that we are performing a conversion by which the time should be cancelled out to obtain liters, we first need to convert the seconds on bottom to hours and then the volume on top to liters, just a shown down below:

Which turns out 29 L with 2 significant figures.
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Answer:
The direct channels by which extraction can affect the economy are of particular interest. The development of mines or oil and gas fields can result in significant shocks to a regional economy, generating jobs and drawing in capital from other regions and countries.
Explanation:
The best example of a heterogenous mixture is sand at the beach. This is a good example as the sand and water do not chemically come together to create a new mixture and the composition of both elements stay constant
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

