We have that the O2 has approximately the same mass as 1 mole of CH3OH
O2=32g,CH3OH =32g
Question Parameters:
Generally, the atomic mass of an atom is the same as the mass of a mole of atom.
1mole=6.02x10^{23}
atomic mass of Oxygen = 16
mass O2= 16*2
mass O2=32g.
Ethanol = CH3OH.
Therefore, one mole of CH3OH weights 12+(3*1)+16+1=32g
Hence O2=32g,CH3OH =32g
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