1. (25 pts) A mixture of air and perchlorethylene is flowing in a duct at temperature...

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1. (25 pts) A mixture of air and perchlorethylene is flowing in a duct at temperature 59.5°C and a pressure of 112.3 kPa. The molar concentration of this chemical in the duct is 19.0 mol/m³. The total (actual not standard) volume flow rate of the mixture is 0.0895 m³/s. (a) Estimate the mass flow rate of the chemical in the duct (in units of g/s and also in units of lbm/min). Give all answers to three significant digits, which is appropriate for the given information. (b) Calculate the mol fraction of the chemical in PPM. If workers were exposed to this gas mixture for 8 hours, would OSHA be concerned? Explain. Why would we normally not be concerned about exposure in this situation? (c) If the duct is vented to the atmosphere with no pollution control device, estimate how many tons (1 ton mass = 2000 Ibm) of the chemical are discharged into the atmosphere in a year, assuming that the plant runs 16 hours per day, 6 days per week. Note: Use 365.25 days in a year for your calculations, which is the average year counting leap years. 1. (25 pts) A mixture of air and perchlorethylene is flowing in a duct at temperature 59.5°C and a pressure of 112.3 kPa. The molar concentration of this chemical in the duct is 19.0 mol/m³. The total (actual not standard) volume flow rate of the mixture is 0.0895 m³/s. (a) Estimate the mass flow rate of the chemical in the duct (in units of g/s and also in units of lbm/min). Give all answers to three significant digits, which is appropriate for the given information. (b) Calculate the mol fraction of the chemical in PPM. If workers were exposed to this gas mixture for 8 hours, would OSHA be concerned? Explain. Why would we normally not be concerned about exposure in this situation? (c) If the duct is vented to the atmosphere with no pollution control device, estimate how many tons (1 ton mass = 2000 Ibm) of the chemical are discharged into the atmosphere in a year, assuming that the plant runs 16 hours per day, 6 days per week. Note: Use 365.25 days in a year for your calculations, which is the average year counting leap years.