bunnycx50111 bunnycx50111
  • 24-05-2024
  • Chemistry
contestada

What is the ppb concentration in a 200.0 L (200.0 kg) sample of water that contains 0.20 mg TCE?
a) 1 ppb
b) 10 ppb
c) 100 ppb
d) 1000 ppb

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