The following chemical equation shows the incomplete formula for burning methanol. The question mark represents the unknown number of oxygen (O2) molecules. How many molecules of O2 are needed to balance this chemical equation?

Question

2CH₃OH + ?O₂ > 2CO₂ + 4H₂O

A. 1
B. 3
C. 5
D. 6

is it 6?????????/

Answer 1

atoms, yes ... molecules, no

Answer 2

is it 3?

Answer 3

yup ... again