What is the rate of disappearance of CH4?

Question

CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(g)

The molar mass of CH₄ is 16 g/mol, and in this reaction, 1.6 g of CH₄ is consumed in 2 minutes.

What is rate of disappearance of CH₄, given in mol/min?

Answer 1

1.6 g x 1 mol/16 g = 0.1 moles

0.1 mol/ 2 min = 0.05 mol/min

So rate of disappearance would be -0.05 mol/min.