Answer:
The concentration of [A⁻] is 0,0166M
Explanation:
In the equilibrium of a weak acid:
HA ⇄ A⁻ + H⁺
The solution of a weak acid contains, initially, the concentration of HA is Y. In equilibrium, the concentrations of each compound are:
[HA] = Y-x
[A⁻] = x
[H⁺] = x
That means [H⁺] = [A⁻].
The pH is defined as -log₁₀ [H⁺]. As the pH was 1,78:
1,78 = -log₁₀ [H⁺]
0,0166M = [H⁺]
As [H⁺] = [A⁻], <em>the concentration of [A⁻] is 0,0166M</em>
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I hope it helps!
Answer:
false.nowadays humans are destroying forest,extracted more minerals,making pollution. in my view.
Asthenosphere.
This layer is the only one of the choices located inside of the Earth and is around the lithosphere and the mesosphere.
Answer:
What was the primary cause of the increase in oxygen content between 400 and 300 million years ago
Explanation:
Answer: Conservation of energy
Explanation:
The law of conservation of energy or the first law of thermodynamics states that energy cannot be created or destroyed but can be transformed from one state to another. It can be transformed from Potential energy to Kinetic energy, to chemical energy, to mechanical energy and so on.
In the case above the condensation of ADP an inorganic phosphate stored up 32kJ of energy as ATP (potential energy). The hydrolysis of ATP to ADP and inorganic also releases 32kJ of energy (kinetic energy) the same value of energy that was initially stored up. This means that energy is been conserved.