How many moles of o2 are in 7 l tank at 25oc and 7 atm pressure?
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jsimpson11000 4 months ago
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Answer:

2 moles

Explanation:

Ideal gas law    PV = n RT     R = .082057 L-atm/mol-K    

  T must be in K units

25 degrees C = 25+273.15 k = 298.15 K

7 (7) = n (.082057)(298.15)        n = 2 moles

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