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PilotLPTM [1.2K]
3 years ago
14

What rules must be obeyed to safely conduct an experiment

Chemistry
1 answer:
sukhopar [10]3 years ago
7 0

Answer:

In order to safely conduct an experiment, laboratory safety rules must be obeyed.

Explanation:

In order to safely conduct an experiment, laboratory safety rules must be obeyed. The laboratory safety rules are outlined to ensure that the experiment is safe, the safety of people and the environment. The laboratory safety rules are, but not limited to:

1. Dress appropriately for the experiment.

2. Use the necessary personal protective equipment such as gloves and goggles.

3. Do not touch chemicals with bare hands or taste chemicals.

4. Know the specific locations of the fire extinguishers and other safety equipment.

5. Avoid eating and drinking in the laboratory.

6. Dispose laboratory wastes in their appropriate waste bins.

There are other safety rules which depend mostly on the types of experiment, chemicals/materials, and operating conditions for the experiment.

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Are bf3 and nf3 symmetrical or unsymmetrical molecules? explain.
Degger [83]

The correct option is this: BF3 IS SYMMETRICAL WHILE NF3 IS UNSYMMETRICAL.

Symmetry is used in chemistry to explain the structure of chemical substances, that is, it is used to explain how the particles in chemical substances are arranged. In chemistry, molecular symmetry is used to explain the behavior of chemical substances. A chemical substance is said to be symmetrical if its polar bonds are evenly distributed; it is described as unsymmetrical if its bonds are unequally distributed. In the compound BF3, the bond dipoles cancel one another out because the polar bonds are evenly distributed whereas in NF3, the bond dipoles were not able to cancel each other out because of unequal distribution of the polar bonds, the compound has a net dipole moment.

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3 years ago
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Help pls, it's a test about fossils?
Anna71 [15]

Answer:

C. At some point, the land was covered in water.

Explanation:

In the diagram it shows the different fossil layers. In the bottom layers there are shells, but as you go up the fossils start changing. This shows that there used to be water there, but now it is land.

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3 years ago
What material is least likely to be recognized as a mixture by looking under a microscope
I am Lyosha [343]
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4 years ago
A molar solution is a solution that contains one mole of solute in​
BartSMP [9]

Answer:

1 liter of the solution

Explanation:

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  • Therefore, the concentration of a solution is calculated by dividing the number of moles of a solute by the volume of the solution.
  • Concentration is given in mol/L or mol/dm³.
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astronauts brought back 500 lb rock samples from the moon. how many kilograms did they bring back (1 kg = 2.20 lbs)
tigry1 [53]
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A. 500 kg

B. 1,100 kg

C. 498 kg

D. 227 kg


I believe it is D.
4 0
3 years ago
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