Several models of atoms were mentioned in the lesson this week. plum pudding, planetary and quantum mechanical. which reason below explains why there are different atom models?

Explanation:

There are different atomic models due to the fact that with advancement in technology and research, the atom began to open up. More scientists began to formulate models that would completely unify the different observations about the atom.

From the different model of atom, noticeable progressions could be observed in terms of sophistication and what they entail. As more details of the atoms were revealed, the need to modify the model becomes important.

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

fe 55.85 g/mol and h2o 18.02 g/mol.