_1.In the chemical reaction CH4(g) + 2 02(g) --> CO2(g) +2 H2O(g), the rate of consumption of oxygen gas is observed to be 4 mol/L•min. What is the rate of

production of carbon dioxide? (a) 1 mol/L•min (b) 2 mol/L•min (c) 4 mol/L•min (d) 8 mol/L•min (e) 16 mol/L•min