Hi there,
I have a degree in Chemical Engineering and work experience with the same.
Depending on the nature of the questions you provide and the data it gives, the answer to the question and the time taken shall be determined. On an average, consider that it shall take 150 to 300 minutes for a detailed typed solution to reach you if it is a data based question. However, if the data is to be found out, derived and produced, it shall take nearly 2-3 days to develope codes and run simulation.
I hope ,we shall have a good business together .
Cheers