1. Write the Balanced Chemical Equation

The reaction between NO and O2 produces NO2:

2 NO + O2 → 2 NO2

2. Calculate the Moles of O2

* Find the molar mass of O2: 16 g/mol (O) * 2 = 32 g/mol

* Calculate the moles of O2: 384 g / 32 g/mol = 12 moles

3. Determine the Moles of NO2 Produced

* The balanced equation shows a 1:2 mole ratio between O2 and NO2.

* This means for every 1 mole of O2, 2 moles of NO2 are produced.

* Moles of NO2: 12 moles O2 * (2 moles NO2 / 1 mole O2) = 24 moles NO2

4. Calculate the Mass of NO2

* Find the molar mass of NO2: 14 g/mol (N) + 16 g/mol (O) * 2 = 46 g/mol

* Calculate the mass of NO2: 24 moles * 46 g/mol = 1104 g

Answer: 1104 grams of NO2 are formed when NO reacts with 384 grams of O2.