The table shows five items that a person may consider including in a safety contract. item number item 1 label all containers. 2 tie long hair back. 3 bring a cell phone to the lab in case of emergency. 4 bring a small laptop computer to the lab to use msds online. 5 wear safety goggles at all times. which three of the five items would be best to include in a safety contract? 1, 2, and 3 1, 2, and 5 2, 3, and 4 3, 4, and 5

The correct answer is B.

Answer : The correct option are, 1, 2, and 5

Explanation :

As we know that there are many safety rules when we are working in the chemistry laboratory. The safety rules are most important for us. Always follow these safety rules during the experiment.

The safety rules are :

Hence, the correct option are, 1, 2, and 5

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.