The rate constant for the low-pressure decomposition of N₂O(g) is 3.60 × 10⁻² L·mol⁻¹·s⁻¹ at 250 K. If the initial pressure of N₂O(g) is 25.0 torr at 250 K, calculate the pressure of N₂O(g) remaining after 15.0 milliseconds. Assume any reverse reactions are insignificant under these conditions. Note: 760 torr = 1 atm.
a) 22.5 torr
b) 18.0 torr
c) 15.3 torr
d) 10.8 torr