(a) Consider the combustion of octane, given below:

2 C₈H₁₈(g) + 25 O₂(g) --> 16 CO₂(g) + 18 H₂O(g)

If C₈H₁₈(g) is decreasing at the rate of 0.590 mol/s, what are the rates of change of O₂(g), CO₂(g), and H₂O(g)? O₂(g)/t = ____ mol/s CO₂(g)/t = ____ mol/s H₂O(g)/t = ____ mol/s (b) The decomposition reaction given below:

1 SO₂Cl₂(g) --> 1 SO₂(g) + 1 Cl₂(g)

is carried out in a closed reaction vessel. If the partial pressure of SO₂Cl₂(g) is decreasing at the rate of 299 torr/min, what is the rate of change of the total pressure in the vessel? P_tot /t = ____ torr/min