Question

1. what are the five safety precautions (in order) that you should take when inserting a glass tube into a rubber stopper?

a. make sure that the glass tubing is not jagged, the edges should be smooth.
b. make sure you wear heavy gloves to protect your hands. if leather gloves are not available, use rubber gloves and wrap the tubing in a paper towel before attempting to insert it into a stopper.
c. apply a lubricant before inserting the tubing.
d. hold the tubing as near as possible to the stopper and use a twisting motion to insert it.
e. make sure that the tubing is removed as soon as the experiment is finished so that it does not stick to the stopper
a. apply a lubricant before inserting the tubing.
b. make sure you wear heavy gloves to protect your hands. if leather gloves are not available, use rubber gloves and wrap the tubing in a paper towel before attempting to insert it into a stopper.
c. make sure that the glass tubing is not jagged, the edges should be smooth.
d. make sure that the tubing is removed as soon as the experiment is finished so that it does not stick to the stopper
e. hold the tubing as near as possible to the stopper and use a twisting motion to insert it.
a. hold the tubing as near as possible to the stopper and use a twisting motion to insert it.
b. make sure you wear heavy gloves to protect your hands. if leather gloves are not available, use rubber gloves and wrap the tubing in a paper towel before attempting to insert it into a stopper.
c. apply a lubricant before inserting the tubing.
d. make sure that the glass tubing is not jagged, the edges should be smooth.
e. make sure that the tubing is removed as soon as the experiment is finished so that it does not stick to the stopper

Explanation:

When inserting a glass tube into a rubber stopper, first, ensure the glass tubing is smooth (no jagged edges) to prevent cuts. Second, protect hands with gloves (if leather not available, use rubber and wrap tubing in paper towel). Third, apply lubricant (e.g., glycerin) to ease insertion. Fourth, hold tubing near the stopper and use a twisting motion (this gives better control and reduces breakage risk). Removing tubing after the experiment (option e in all choices) is a good practice but not part of the insertion - process safety precautions in the order of insertion steps.

Answer:

a. Make sure that the glass tubing is not jagged, the edges should be smooth.
b. Make sure you wear heavy gloves to protect your hands. If leather gloves are not available, use rubber gloves and wrap the tubing in a paper towel before attempting to insert it into a stopper.
c. Apply a lubricant before inserting the tubing.
d. Hold the tubing as near as possible to the stopper and use a twisting motion to insert it.