Answer:
3.25 × 10²⁴ molecules of water
Explanation:
Step 1: Write the balanced equation
3 PbO + 2 NH₃ → 3 Pb + N₂ + 3 H₂O
Step 2: Calculate the moles of water formed from 3.60 moles of ammonia
The molar ratio of NH₃ to H₂O is 2:3. The moles of water formed are 3/2 × 3.60 mol = 5.40 mol
Step 3: Calculate the molecules in 5.40 moles of water
We will use Avogadro's number: 6.022 × 10²³ molecules/mol.
5.40 mol × 6.022 × 10²³ molecules/mol = 3.25 × 10²⁴ molecules
