Where can the properties of natural gas and propane be found?

The properties of natural gas and propane are typically detailed in dedicated sections of codebooks that provide specifications and safety guidelines for the handling and use of these gases. In this instance, the correct answer indicates that page 351 is where one would find comprehensive information on the properties of both natural gas and propane. This may include essential details such as their physical and chemical properties, applications, and safety considerations, which are critical for anyone working with these fuels in a technician capacity.

Finding the relevant information on page 351 allows technicians to reference the standards and codes that govern proper safety practices and technical specifications when dealing with natural gas and propane systems. Accessing this data is vital for ensuring compliance with regulations and for the effective management of gas appliances and systems.