Answer:
Ka for the monoprotic acid is 4.65 ×10⁻⁴ M.
Explanation:
Chemical reaction: HA(aq) ⇄ A⁻(aq) + H⁺(aq).
c(monoprotic acid) = 0.0110 M.
pH = 2.69
[A⁻] = [H⁺] = 10∧(-2.69).
[A⁻] = [H⁺] = 0.00204 M; equilibrium concentration.
[HA] = 0.0110 M - 0.00263 M.
[HA] = 0.00837 M.
Ka = [A⁻]·[H⁺] / [HA].
Ka = (0.00204 M)² / 0.00837 M.
Ka = 0.000465 M
= 4.65 ×10⁻⁴ M.
Composed of sodium ions Na+( elemental sodium is a metal). And iodide ions l-(elemental iodine is a nonmetal)
Answer:
- In the angles between faces
- The number of edges of equal length
Explanation:
There are 14 Crystal systems available
They are divided into three parts
- FCC(Face centred cubic)
- BCC(Body centred cubic)
- ECC(Edge centred cubic)
Answer:
The remote control sends low-energy infrared radiation to a light detector on the front of the television
Explanation:
The signal between a remote control and the TV controls consists of pulses of infrared light, which is invisible to the human eye