pH is calculated using Handerson- Hasselbalch Equation,
pH = pKa + log [Conjugate Base] / [Acid] --- (1)
Conjugate Base = NaClO
Acid
= HClO
So,
pH = pKa + log [NaClO] / [HClO]
We are having concentration of acid and salt but missing with
pKa,
pKa is calculated as,
pKa = -log Ka
Putting value of Ka,
pKa = -log 2.9 × 10⁻⁸
pKa = 7.53
Now,
Putting all values in eq. 1,
pH = 7.53 + log [0.099] / [0.158]
pH = 7.326
It means that the fit and well adjusted ones thrive and "make it", and the weak ones that can't adapt die.
<span>The temperature change is greater when assuming that the mass is constant and the heat must be greater </span>in the result the heat of the metal as being reported too high.
hope it helps
Answer:
33.58%
Explanation:
Data obtained from the question include:
Mass of CuS = 9.56g
Mass of Cu = 6.35g
Mass of S = Mass of CuS — Mass and Cu
Mass of S = 9.56 — 6.35
Mass of S = 3.21g
The percentage by mass of sulphur in CuS is given by:
Mass of S/mass of CuS x 100
Percentage by mass of S = 3.21/9.56 x 100 = 33.58%
Answer:
around 10 percent of freshwater is salt.
Explanation:
I asked alexa and she told me, a little bit of googling does not hurt.