1. Find the Molar Mass of CO
* Carbon (C) has a molar mass of 12.01 g/mol
* Oxygen (O) has a molar mass of 16.00 g/mol
* Molar mass of CO = 12.01 g/mol + 16.00 g/mol = 28.01 g/mol
2. Calculate the Number of Moles
* Moles = Mass / Molar Mass
* Moles = 140 g / 28.01 g/mol = 5 moles
3. Use Avogadro's Number
* Avogadro's number states that there are 6.022 x 10^23 molecules in one mole of any substance.
* Number of molecules = Moles x Avogadro's Number
* Number of molecules = 5 moles x 6.022 x 10^23 molecules/mol = 3.011 x 10^24 molecules
Therefore, there are approximately 3.011 x 10^24 molecules in 140 g of CO.
