Multiple Choice
An oxygen tank kept at 20C contains 28.0 moles of oxygen and the gauge reads 31.0 atm.After two weeks,the gauge reads 10.5 atm.How many moles of oxygen were used during the two-week period?
A) 9.25 moles
B) 7.5 moles
C) 20.5 moles
D) 18.5 moles
E) 9.48 moles
Correct Answer:
Verified
Correct Answer:
Verified
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