Question
64 g O2 is equivalent to how many moles of oxygen? [Ans. 2 mol]
Answer
Step 1: Calculation of molar mass
The molar mass of oxygen (O2) = 16 × 2 = 32
Step 2: Calculation of moles
Number of moles of oxygen = 64 \over 32 = 2 mol
Therefore, 64 g of O2 is equivalent to 2 moles of oxygen.