the reaction 4 NH3(g) + 5 O2(g) –gt; 4 NO(g) + 6 H2O(g), -D[NH3]/Dt = 2.6 x 10-3 M/s at a particular time.

the reaction 4 NH3(g) + 5 O2(g) –> 4 NO(g) + 6 H2O(g), -D[NH3]/Dt = 2.6 x 10-3 M/s at a particular time. What is the value of -D[O2]/Dt at the same instant