Question

How many moles of o2 are in 7 l tank at 25oc and 7 atm pressure?

Answer 1

2 moles

Step-by-step 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