In response of what like what’s the full clear question
        
             
        
        
        
1.27moles of K3PO4 can be formed.
 
        
             
        
        
        
Cell theory states that all the living organisms are made up of basic structural and functional units, cells. All cells divide and give rise to new cells. All the cells have similar chemical composition. The nuclei acid DNA present in the chromosomes helps in carrying hereditary information from generation to generation. So, in order to sustain life the cells must contain DNA either enclosed in the nucleus or freely floating in the cytoplasm.
 
        
             
        
        
        
Electromagnetic wave travels faster through air than metal.
Option A
<u>Explanation:</u>
There are different kinds of wave energy. The most significant are electromagnetic and mechanical waves. The mechanical waves propagate through the medium by transfer of energy by vibrating of particles in medium.
So, the more number of particles present in the medium, the more fast the mechanical wave can propagate. So the mechanical waves travel faster in metals consisting of more number of free charge carriers. But electromagnetic waves does not need any of the medium to propagate. So it can travel faster in air than in metals.
 
        
             
        
        
        
Answer:
General chemical equation 
           2 M + 3 X₂ → 2 MX₃
Explanation:
When metal reacts with halogens metal halide as a product obtained.
Now oxidation state of metal assume (+3)
and oxidation state  for halogen = (+1)
So formula of the metal halide is (MX₃)
            Denote the metal as M and halogen as X
                     the balanced chemical equation
                          2 M + 3 X₂ → 2 MX₃
So the resulted general equation when metal react with halogen is 
                                        2 M + 3 X₂ → 2 MX₃