Two people work side by side at a chemical plant with poor ventilation. They have been exposed to 0.6 ppm (3.22 mg/m³) of trichloroethylene (TCE) for 20 years. Standard factors for the two are as follows:parameterWorker AWorker BBody mass100 kg70 kgRespiration rate1.5 m³/h0.9 m³/hAbsorption factor100%90% The molecular weight of TCE is 131.40 g/mol, and the slope factor-inhalation for TCE is .Their workstations are at normal temperature and pressure, and they both work 50 weeks a year and 8 h daily. Use a life expectancy of 70 years. The lifetime chronic daily intake for worker A is most nearly:4 x 10^-4 mg/kg-day8 x 10^-3 mg/kg-day4 x 10^-2 mg/kg-day6 x 10^-2 mg/kg-day The lifetime chronic daily intake for worker B is most nearly:8 x 10^-3 mg/kg-day5 x 10^-2 mg/kg-day6 x 10^-2 mg/kg-day8 x 10^-2 mg/kg-dayThe excess cancer risk for worker A is most nearly:3 x 10^-68 x 10^-58 x 10^-46 x 10^-3The excess cancer risk for worker B is most nearly:3 x 10^-64 x 10^-56 x 10^-43 x 10^-3 2. Two people work side by side at a chemical plant with poor ventilation. They have beenexposed to 0.6 ppm (3.22 mg/m³) of trichloroethylene (TCE) for 20 years. Standard factorsfor the two are as follows:parameterBody massRespiration rateAbsorption factorWorker A100 kg1.5 m³/h100%Worker B70 kg0.9 m³/h90%The molecular weight of TCE is 131.40 g/mol, and the slope factor-inhalation for TCE is 1.3 x 10-2(mg/kg day) .Their workstations are at normal temperature and pressure, and they both work50 weeks a year and 8 h daily. Use a life expectancy of 70 years.(a) The lifetime chronic daily intake for worker A is most nearly:(a) 2.4 x 10^-4 mg/kg-day(b) 3.8 x 10^-3 mg/kg-day(c) 1.4 x 10^-2 mg/kg-day(d) 7.6 x 10^-2 mg/kg-day(b) The lifetime chronic daily intake for worker B is most nearly:(a) 6.8 x 10^-3 mg/kg-day(b) 2.5 x 10^-2 mg/kg-day(c) 3.6 x 10^-2 mg/kg-day(d) 5.8 x 10^-2 mg/kg-day(c) The excess cancer risk for worker A is most nearly:(a) 1.3 x 10^-6(b) 2.8 x 10^-5(c) 9.8 x 10^-4(d) 4.6 x 10^-3(d) The excess cancer risk for worker B is most nearly:(a) 4.3 x 10^-6(b) 3.4 x 10^-5(c) 7.6 x 10^-4(d) 4.3 x 10^-3

Calculate the chronic daily intake (CDI) for each worker using the following formula: CDI = (C × IR…

Answered: 2. Two people work side by side at a…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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Two people work side by side at a chemical plant with poor ventilation. They have been exposed to 0.6 ppm (3.22 mg/m³) of trichloroethylene (TCE) for 20 years. Standard factors for the two are as follows:

parameter	Worker A	Worker B
Body mass	100 kg	70 kg
Respiration rate	1.5 m³/h	0.9 m³/h
Absorption factor	100%	90%

The molecular weight of TCE is 131.40 g/mol, and the slope factor-inhalation for TCE is .Their workstations are at normal temperature and pressure, and they both work 50 weeks a year and 8 h daily. Use a life expectancy of 70 years.

The lifetime chronic daily intake for worker A is most nearly:
- 4 x 10^-4 mg/kg-day
- 8 x 10^-3 mg/kg-day
- 4 x 10^-2 mg/kg-day
- 6 x 10^-2 mg/kg-day

The lifetime chronic daily intake for worker B is most nearly:
- 8 x 10^-3 mg/kg-day
- 5 x 10^-2 mg/kg-day
- 6 x 10^-2 mg/kg-day
- 8 x 10^-2 mg/kg-day
The excess cancer risk for worker A is most nearly:
- 3 x 10^-6
- 8 x 10^-5
- 8 x 10^-4
- 6 x 10^-3
The excess cancer risk for worker B is most nearly:
- 3 x 10^-6
- 4 x 10^-5
- 6 x 10^-4
- 3 x 10^-3