Answer:
- <em><u>pH </u></em><u>= 9.73</u>
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Explanation:
<em>pOH</em> is the negative logarithm of the molar <em>concentration</em> of<em> hydroxide ions </em>and pH is the negative logarithm of the concentration of hydronium ions.
The mathematical expression to determine pOH is:
![pOH=-\log [OH^-]](https://tex.z-dn.net/?f=pOH%3D-%5Clog%20%5BOH%5E-%5D)
Where [OH⁻] means the molar concentration of hydroxide ions.
Substituting:
<em>pH </em>and <em>pOH</em> are related by the equation:
From which:
I think in drylands, drylands are particularly affected by desertification.
The volume becomes two. You have to use the equation P1 x V1 = P2 x V2
P is pressure and V is volume.
P1 = 50 P2 = 125
V1 = 5 V2 = v (we don't know what it is)
Then set up the equation:
50 times 5 = 125 times v
250 = 125v
the divide both sides by 125 and isolate v
2 = v
Therefore the volume is decreased to 2.
Also, Boyle's Law explains this too: Volume and pressure are inversely related, This means that when one goes up the other goes down (ie when pressure increases volume decreases and vice versa). Becuase the pressure went up from 50 KPa tp 125 KPa the volume had to decrease.
2H2O2 decomposes into the products 2H2O + O2(g)
