Calculate the number of moles of 3. 2 gram of Oxygen gas

1.	Calculate the number of moles of 3. 2 gram of Oxygen gas
Answer» 1 molecule of O2 weighs = 8 × 2 = 16g16g of O2 contains = 1 mole1g of O2 contains = 1/16 mole3.2 g of O2 will contain = (1/16) × 3.2 = 1 × 0.2 = 0.2 moles

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