Using the combined gas law formula,
Given that P1 = 0.825, V1 = 2.76 L, V2 = 1.38 L, P2 = ?
And T1 = T2; we would have P2 = [ P1 X V1 ] ÷ V2
: [0.825 X 2.76] ÷ 1.38
= 1.650atm
