omar738 omar738
  • 06-03-2024
  • Chemistry
contestada

The unit of measure used to describe the amount of EtO in the air is called?
1) Parts per million (ppm)
2) Micrograms per cubic meter (µg/m³)
3) Milligrams per liter (mg/L)
4) Nanograms per kilogram (ng/kg)

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