Explanation:
In a double displacement reaction, there is an actual exchange of partners to form new compounds. 
The reaction is given as shown below: 
          AB + CD →  AD + CB 
One of the following conditions serves as the driving force for a double replacement reaction: 
- Formation of an insoluble compound or precipitate
- Formation of water or any other non-ionizing compound
- Liberation of a gaseous product. 
 
        
             
        
        
        
Answer:
125.5 ×10^-3 m^3= 0.1255 m^3
Explanation:
Volume=5.6mol×22.414dm^3
 =125.5dm^3
 
        
             
        
        
        
Answer:
c. law
Explanation:
Law - 
It is type of statement , which helps to explain certain observations , in the form of mathematical relationship or verbal statements , is referred as a law . 
Law is a widely accepted information , which can get altered by some new inventions or exception. 
A law is stated in words as well as in the form of some mathematical relationships or equations. 
Hence , from the given information of the question, 
The correct option is c. law . 
 
        
             
        
        
        
Answer: The statement is false 
Explanation:
Electrons occupy a region in atoms known as orbitals or subs hell.  These orbitals include 
I) S-orbital: it can occupy a maximum of two electrons 
II) P-orbital: It occupies a maximum of six electrons 
III) D-orbital: it occupies a maximum of ten electrons 
F and G-orbitals as examples of other orbitals present.
A good illustration of the 6 electrons occupied by the P-subshell is seen in Sodium (Na) with atomic number of 11
Na = 1s2, 2S2 2p6, 3s1
Note: extra electrons are transferred to the next orbital
 
        
                    
             
        
        
        
Answer:
Al2O3 + 6HCl --> 2AlCl3 + 3H2O
Explanation:
Al: 2
O: 3
H: 6
Cl: 6
Balanced on both sides.