Assertion: hydrogen fluoride's fluorine | /r/HasProperty | about 400 pounds
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Source sentences:
text: 8 hour run, the total fluorine entering the scrubber in both gas and dust was about 400 pounds, with a total of only about 23 pounds of fluorine leaving the scrubber; a total of 368 pounds of fluorine was recovered, being 194 pounds in the liquor and 174 pounds in the scrubber solids.