With that problem
important i̇ have quiz tomorrow

Final pressure of the gas remaining in the first container is 3.5 atm

Explanation:

Since it is given that temperature is constant , we can apply -

PV=constant , where

P = Pressure of the gas

V = Volume of the container in which the gas is contained

Initially,

For container 1 -

= 4 atm

= 6 L

Finally,

For container 2 -

= 3 atm

= 1 L

For container 1 -

= ?

= 6 L

∴ = +

∴ 4×6 =  (×6) +(3×1)

∴ = 3.5 atm

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).