Which will ensure laboratory safety during the experiment? check all that apply. 1. using beaker tongs to handle the hot beaker 2. reading the thermometer accurately 3. checking the beaker for chips prior to heating on the hot plate 4. using a beaker instead of an erlenmeyer flask 5.turning off the hot plate after use

The following will ensure laboratory safety during an experiment;

1) Using tongs to handle a hot beaker: This prevents direct contact with the hot beaker and avoids burns

5) Turning off the hot plate after use: If the hot plate is left on, it could injure anyone who might touch it accidentally

Explanation:

While performing any experiment it is important to take proper safety measures so that any kind of accident will be avoided.

For example, using tongs to handle hot beaker is a safety measure as tongs protect our hands from burning if we bare handedly try to touch the beaker.

Thus, we can conclude that out of the given options, following are the safety measures.

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.