$\mathrm { SO } _ { 2 }$ $\mathrm { Cl } _ { 2 }$

$\mathrm { SO } _ { 2 }$ $\mathrm { Cl } _ { 2 }$ decomposes in the gas phase by the reaction
$\mathrm { SO } _ { 2 }$ $\mathrm { Cl } _ { 2 }$ (g) ? $\mathrm { SO } _ { 2 }$ (g) + $\mathrm { Cl } _ { 2 }$ (g)
The reaction is first order in $\mathrm { SO } _ { 2 }$ $\mathrm { Cl } _ { 2 }$ and the rate constant is 3.0 × $10 ^ { - 6 }$ $s ^ { - 1 }$ at 600 K.A vessel is charged with 6.4 atm of $\mathrm { SO } _ { 2 } \mathrm { Cl } _ { 2 }$ at 600 K.The partial pressure of $\mathrm { SO } _ { 2 }$ $\mathrm { Cl } _ { 2 }$ at $3.0 \times 10 ^ { 5 } \mathrm {~s}$ is ________ atm.

A) 0.41
B) 0.064
C) 3.8
D) 0.29
E) 2.6