Chemistry, 25.11.2020 01:00 Mypage22

What action is NOT necessary before lighting a Bunsen burner? A)Make sure there are no holes in the hose connected to the burner.
B)Leave the gas stop open for a few minutes before lighting to clear the line.
C)Clear the burner area of flammable materials such as solvents and papers.
D)Check that the gas regulator and air inlet on the burner can be adjusted.

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