Correct compound is [Co(H2O)6]^+3
The oxidation state of Co is +3
[Co(H2O)6]^+3
Let 
  Co be x
  H2O = 0
  x + (0)6 = 3
  x = 3
What is oxidation state?
The oxidation state, commonly known as the oxidation number, is the potential charge that an atom would have if all of its bonds to other atoms were fully ionic. It describes the degree of atom oxidation within a chemical compound.The oxidation state may be positive, negative, or zero in theory.
The oxidation number, sometimes referred to as the oxidation state, is the total number of electrons that an atom gains or loses while uniting with another atom to form a chemical bond.
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Answer:
A
Explanation:
Anything which takes up space and has mass is considered matter. 
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Answer: OA is a balanced equation.
Explanation: For an equation to be balanced, the number of atoms and the total charge of each element in the reaction, of the product and reactant side must be the same.
Considering OA; 6 atoms of nitrogen is present in the reactant side. Shifting to the product side, 6 atoms of nitrogen is also present. Taking the other element in the reaction into account, the number of atoms of each element balances on both sides.
 
        
                    
             
        
        
        
Answer:
In food systems, the continuous phase is usually a liquid with added solids or  beaten egg white and sugar foam is a gas in the liquid dispersion. ... egg white foam is an example of this. air bubbles (disperse phase are ... a colloid is a type of chemical mixture where one substance is dispersed evenly throughout.
Explanation:
 
        
             
        
        
        
<u>Answer:</u> The molar solubility of MX is 
<u>Explanation:</u>
We are given:

The chemical equation for the ionization of MX follows:

                   S         S
The expression of  for above equation is:
 for above equation is:
 ......(1)
      ......(1)
The chemical equation for the ionization of  follows:
 follows:

 0.25M           0.5M      0.25M
Total concentration of cation from both the equation is:
![[M^+]=0.5+S](https://tex.z-dn.net/?f=%5BM%5E%2B%5D%3D0.5%2BS)
As,  , so S is also very very less than 1 and can be easily neglected.
, so S is also very very less than 1 and can be easily neglected.
So, ![[M^+]=0.5M](https://tex.z-dn.net/?f=%5BM%5E%2B%5D%3D0.5M)
Putting values in equation 1, we get:

Hence, the molar solubility of MX is 