Scientists generally use Kelvin
<h3><u>Answer;</u></h3>
pH = 4.38
<u>Explanation;</u>
Consider that;
[H3O+] = 10-pH mol/L
Therefore; the pH is the -log of the [hydronium ion].
pH = - log [H3O+]
Thus;
pH = - log (4.2 × 10^–5)
<u> = 4.38 </u>
Answer: False
Explanation: The plate tectonics move due to convection currents of the mantle; the cooler upper mantle descends while the hotter lower mantles ascend. The heat that drives these convection currents emanated from the core of the earth (not the sun).
The ph of smoke disrupts the natural ph of water( which is 7, the neutral ph) in the atmosphere causing it to become acidic . This is dangerous as it will also have effects on rain and soil ph.