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Unformatted text preview: (b) g/L, (c) ppm, and (d) ppb? (a) 5 10-3 mg/L (b) 5 g/L (c) 5 10-3 ppm (d) 5 ppb 3. Calculate the mole fraction of carbon monoxide (CO) with a concentration of 103 g/m 3 . State your answer in parts per billion. Assume a temperature of 25C and a pressure of 1 atm. 90 ppb 4. Ice-resurfacing machines use internal combustion engines that give off exhaust containing CO and NO x . Average CO concentrations measured in local ice rinks have been reported as high as 107 ppm and as low 36 ppm. How do these concentrations compare with an outdoor air quality standard of 35 mg/m 3 ? Assume a temperature of 20C. 107 ppm is equivalent to 125 mg/m 3 . 36 ppm is equivalent to 42 mg/m 3 . Both high and low average concentrations of CO in ice rinks are higher than the outdoor air quality standard of 35 mg/m 3 ....
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This note was uploaded on 05/04/2010 for the course CEE 320 taught by Professor Mcmahon during the Spring '10 term at Wisconsin.
- Spring '10