According to government standards, the 8-h threshold limit
Chapter 6, Problem 103P(choose chapter or problem)
Problem 103PAccording to government standards, the 8-h threshold limit value is 5000 ppmv for CO2 and 0.1 ppmv for Br2 (1 ppmv is 1 part by volume in 106 parts by volume). Exposure to either gas for 8 h above these limits is unsafe. At STP, which of the following would be unsafe for 8 h of exposure?
(a) Air with a partial pressure of 0.2 torr of Br2
(b) Air with a partial pressure of 0.2 torr of CO2
(c) 1000 L of air containing 0.0004 g of Br2: gas
(d) 1000 L of air containing 2.8X 1022molecules of CO2
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