Answer=1
Potassium Sulfide= K2S (two metals, one non metal)
Sodium Oxide=Na2O (two metals. one nonmetal)
Sodium Chloride=NaCl (one metal, one nonmetal)
Magnesium Oxide=MgO (one metal, one nonmetal)
Magnesium Chloride=MgCl2 (one metal, two nonmetals)
Answer:
T₂ = 43.46 °C
Explanation:
Given that:
The heat of the formation of carbon dioxide = - 393.5 kJ/mol (Negative sign suggests heat loss)
It means that energy released when 1 mole of carbon undergoes combustion = 393.5 kJ = 393500 J
Heat gain by water = Heat lost by the reaction
Thus,
For water:
Mass of water = 5100 g
Specific heat of water = 4.18 J/g°C
T₁ = 25 °C
T₂ = ?
Q = 393500 J
So,
T₂ = 43.46 °C
Answer : The reactant acid and conjugate base in this reaction is,
and
.
Explanation :
Conjugate acid : A species that is formed by receiving of a proton
by a base is known as conjugate acid.
Conjugate base : A species that is formed by donating of a proton by an acid is known as conjugate base.
The given chemical reaction is,

In this reaction,
(base) react with
(acid) to give
(conjugate acid) and
(conjugate base).
Therefore, the reactant acid and conjugate base in this reaction is,
and
.
NaOH → Na⁺ + Cl⁻ ________________________________________________
Organic chemistry
biochemistry
inorganic chemistry
analytical chemistry
physical chemistry