Answer:

Explanation:
Reduction means when a reactant loses oxygen or gains hydrogen.
In the equation:
Hydrogen molecule, it neither gains nor loses hydrogen, but it gains oxygen. so :

Oxygen molecule loses one oxygen atom, and gains four hydrogen atoms, hence it is reduced.
Answer:
creat and trough are the parts of transverse wave
Answer:
Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g)
Explanation:
The net reaction is Z n ( s ) + 2 H + ( a q ) → Z n 2 + ( a q ) + H 2 ( g ) The C l − ions are spectators - they don't change.

WHAT IS KNOWN AS HYBRIDIZATION


<h3> It is the change in the orbitals of the central atom of the molecule to form bonds with other atom if same type or another type.</h3>
The hybrid orbitals r of same level .
The Hybridization takes place in between orbitals of equal or very less energy levels to form same level of energy in all orbitals.
The orbitals combine is always equal to The number of orbitals formed
The names of hybridized orbitals r kept according to the orbital which r combined to form them
<h2 /><h2>Eg:-</h2>
sp orbital :- one s and one p combine to form sp orbital
orbital :- one s and two p orbitals combine to form it..

Answer:
The concentration of KBr is
Explanation:
From the question we are told that
The mass of KBr is 
The molar mass of KBr is 
Volume of water is
This implies that the volume of the solution is 
The number of moles of KBr is

Substituting values

The concentration of KBr is mathematically represented as