MnO₂ + 4HCl = MnCl₂ + 2H₂O + Cl₂
n(MnO₂)=0.45 mols
n(HCl)=0.28 mols
0.45 : 0.28 = 1 : 0.622
the reaction equation 1:4
the hydrogen chloride in the lack
n(Cl₂)=n(HCl)/4
n(Cl₂)=0.28/4=0.07 mols
formed 0.07 mols of chlorine
Answer:
Energy is not created or destroyed but merely changes forms, going from potential to kinetic to thermal energy. This version of the conservation-of-energy principle, expressed in its most general form, is the first law of thermodynamics.
Explanation:
Common salt
sulfur dioxide
Formaldehyde is an organic compound.
Answer: Yes, 
is a strong acid.
acid = , conjugate base = 
, base = 
, conjugate acid = 
Explanation:
According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.
Yes is a strong acid as it completely dissociates in water to give 
ions.
For the given chemical equation:
Here, is loosing a proton, thus it is considered as an acid and after losing a proton, it forms which is a conjugate base.
And, is gaining a proton, thus it is considered as a base and after gaining a proton, it forms which is a conjugate acid.
Thus acid =
conjugate base =
base =
conjugate acid = .
