Final answer:
The sentence should read: 'Please light the Bunsen burner, Eddie, so we can begin the experiment.' Commas are used for the direct address to Eddie, indicating he is the one being asked to light the Bunsen burner.
Step-by-step explanation:
The correct sentence with the insertion of two commas should be: Please light the Bunsen burner, Eddie, so we can begin the experiment.
Commas are used here to create a direct address, which involves placing the name of the person being spoken to (in this case 'Eddie') between commas. It makes clear that 'Eddie' is the person being instructed to light the Bunsen burner.
From a safety perspective in the context of a chemistry lab, following instructions like these should be done with caution, especially when involving an open flame like that from a Bunsen burner. Safety protocols such as tucking in loose clothing and tying back long hair should always be observed.