Answer
The base is Ba(OH)2
Explanation
This equation follows the path of, acid +base---salt +water
H2S +Ba(OH)2------BaS +2H2O
Where H2S is the acid, Ba(OH) is the base and 2H2O is water.
Here, Barium hydroxide reacts with hydrogen sulfide to give barium sulfide and water.
Ch3COOH is an electrolyte for sure. So option “C” is the
correct answer for this question. Electrolyte is actually a compound that
dissolves easily in water and creates a solution that becomes a good conductor
of electricity. The reason why the solution becomes a good conductor of
electricity is due to the presence of free ions. There can be both strong and
weak electrolytes. The compounds that release small number of free ions on
dissolving in water are called weak electrolytes and those that release large
number of ions are strong electrolytes.
Answer:
cation ca2+ anion cl-
Explanation:
please see the picture your answer is there
Answer : The enthalpy of formation of is, -812.4 kJ/mole
Explanation :
According to Hess’s law of constant heat summation, the heat absorbed or evolved in a given chemical equation is the same whether the process occurs in one step or several steps.
According to this law, the chemical equation can be treated as ordinary algebraic expression and can be added or subtracted to yield the required equation. That means the enthalpy change of the overall reaction is the sum of the enthalpy changes of the intermediate reactions.
The formation of will be,
The intermediate balanced chemical reaction will be,
(1)
(2)
(3)
(4)
Now adding all the equations, we get the expression for enthalpy of formation of will be,
Therefore, the enthalpy of formation of is, -812.4 kJ/mole
Answer:
0.882 ppm is the toxaphene concentration in the soil
Explanation:
One relation of units for ppm is mg/kg
Let's determine the mass of soil with the density.
Soil density = Soil mass / Soil volume
1700 kg / m³ = Soil mass / 1000 m³
1700 kg / m³ . 1000 m³ = Soil mass → 1.7×10⁶ kg
Let's convert the mass of toxaphene to mg
1.5 kg . 1 mg/ 1×10⁻⁶ kg = 1.5×10⁶ mg
1.5×10⁶ mg / 1.7×10⁶ kg = 0.882 ppm