HCIO, How many atoms are in the chemical formula shown?

A) 2
B) 3
C) 4
D) 5

Explanation:

First, identify the elements.

Next, identify any subscripts or coefficients. This would indicate there are multiple atoms of each element or group of elements.

There are none, so each element has 1 atom.

There are 3 elements with 1 atom each, so 3*1= 3

This chemical formula has 3 atoms and B is correct.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.