In a batch process, 40 mole of O2 and 30 mole of CO2 entered a vessel with some CO2, if 100 mole of product leaves the vessel, what is the percentage of O2 in the product?

In a batch process, 40 mole of O2 and 30 mole of CO2 entered a vessel

1.	In a batch process, 40 mole of O₂ and 30 mole of CO₂ entered a vessel with some CO₂, if 100 mole of product leaves the vessel, what is the percentage of O₂ in the product?
A.	t10%
B.	t40%
C.	t60%
D.	t80%
Answer» C. t60%