[tex]\mathsf{\dfrac{P_{1}\cdot V_{1}}{T_{1}}=\dfrac{P_{2}\cdot V_{2}}{T_{2}}}[/tex]
[tex]\mathsf{\dfrac{1,9\cdot 12,8}{365}=\dfrac{P_{2}\cdot 9,9}{285}}[/tex]
[tex]\mathsf{\dfrac{24,32}{365} = \dfrac{9,9\cdot P_{2}}{285}}[/tex]
[tex]\mathsf{9,9\cdot365\cdotP_{2}=24,32\cdot285}[/tex]
[tex]\mathsf{3613,5\cdot P_{2}=6931,2}[/tex]
[tex]\mathsf{P_{2}=\dfrac{6931,2}{3613,5}}[/tex]
[tex]\mathsf{\boxed{P_{2}=1,92~atm}}[/tex]
I hope you enjoy!
