Hello people ~
help me with the question attached.
Thanks in advance.

Answer:
[tex]\fbox {(2) 4.9}[/tex]
Explanation:
Applying the Ideal Gas Equation :
[tex]\boxed {PV = nRT}[/tex]
Finding n :
Solving for P :
∴ The pressure inside the flask in bar is 4.9.
Moles of oxygen
Temperature=273+27=300K
Apply ideal gas equation