Question

an oxygen tank used for scuba diving has. avolume of 12.0 L .If the pressure of the tank is known to be 204.047 atm and the temperature is 22.0 C(295 K), how many moles of oxygen are contained in the tank

Answer 1

Answer: 101 moles of oxygen are contained in the tank

Step-by-step explanation:

According to ideal gas equation:

`PV=nRT`

P = pressure of gas = 204.047 atm

V = Volume of gas = 12.0 L

n = number of moles = ?

R = gas constant =
`0.0821Latm/Kmol`

T =temperature =
`22.0^0C=(22.0+273)K=295K`

`n=(PV)/(RT)`

`n=(204.047atm* 12.0L)/(0.0821 L atm/K mol* 295K)=101moles`

Thus 101 moles of oxygen are contained in the tank