What are the factors may have contributed to the difference in the actual and theoretical value?

The difference between actual and theoretical values can be attributed to several factors, including measurement errors, environmental conditions, and the assumptions made in theoretical models. Variability in experimental conditions, such as temperature and pressure, can also impact results. Additionally, the purity of materials used and the precision of instruments can lead to discrepancies. Lastly, simplifications or idealizations in the theoretical framework may not fully account for real-world complexities.