Question

A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts with oxygen gas (O2) to produce carbon dioxide (CO2). What mass of water is produced by reaction of of 7.98 g of octane?

Answer 1

approximately 11.33g

Step-by-step explanation:

1. Molar mass of octane (C8H18): 114.22 g/mol

2. Molar mass of water (H2O): 18.02 g/mol

3. Moles of octane: 0.0699 moles (7.98 g / 114.22 g/mol)

4. Moles of water produced: 0.6291 moles (0.0699 moles of octane * 9)

5. Mass of water produced: 11.33 g (0.6291 moles * 18.02 g/mol)