Question

Which contains the greatest number of moles of oxygen atoms
i) 1 mol of ethanol
ii) 1 mol of formic acid
iii) 1 mol of H2O

Answer 1

Answer ⇒Option (ii). 1 mole of Formic Acid.

Solution ⇒

Chemical formula of the ethanol = C₂H₅OH
1 mole of the Ethanol contains 1 mole of the Oxygen atoms.

Chemical formula of the formic acid = CH₂O₂
From the formula,
1 mole of the Formic acid contains 2 mole of the Oxygen atoms. 

Chemical Formula of the Water = H₂O
From the formula, 
1 mole of the H₂O contains 1 mole of the Oxygen atoms.


Now, we can see that Formic acid contains the highest no. of the moles of the atoms.

Hence, Option (ii). is correct.


Hope it helps.

Answer 2

2nd is the answer..........