Answer:
To get number of neutrons, you must have the mass number and atomic number of that atom.

atomic number is number of protons
The formula that connects Ka1, Ka2, and Ka3 is the relation;
Ka = Ka1 * Ka2 * Ka3
<h3>What is the Ka?</h3>
The Ka is defined as the acid dissociation constant of a solution. Now we have the triprotic acid called phosphoric acid. this implies that we have Ka1, Ka2, and Ka3.
Thus the formula that connects Ka1, Ka2, and Ka3 is the relation;
Ka = Ka1 * Ka2 * Ka3
Learn more about Ka:brainly.com/question/16035742
#SPJ1
The definition/term for matter that is a substance made of different kinds of atoms bonded together is a compound. That definition is for the word compound. Hope I helped!
Models of atoms and compounds help in understanding of concepts of reactions in chemistry.
<h3>What are models?</h3>
Models are objects used to provide a visual representation of certain things or structures.
Models are widely employed in chemistry because of their usefulness in strengthening understanding of concepts.
The importance of models in chemistry include:
- they help students to be able to visualize the structures of atoms and compounds in a macroscopic scale
- they provide an a clearer understand of how atoms combine to form products in reactions.
Therefore, models help in understanding of concepts of reactions in chemistry.
Learn more about chemistry models at: brainly.com/question/4769748
The formula SF_2 expresses one-third the amount of F.
The F:S ratio in the first compound is 6:1.
We want a compound with one third the amount of F, so F:S = 2:1.
The simplest formula with this ratio is SF_2.