Answer: Plate movement is thought to be driven by a combination of the motion of the seafloor away from spreading ridges due to variations in topography and density changes in the crust.
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B .combustion because HOH and CO2 are the products of complete combustion
Answer:
It is expensive, largely because of the amount of electricity required in the extraction process. Aluminium ore is called bauxite . The bauxite is purified to produce aluminium oxide, a white powder from which aluminium can be extracted. The extraction is done by electrolysis.
1.75 (moles O2) × 6 (moles H2O) ÷ 9 (moles O2) = 1.17 (moles H2O)
You have to convert moles of O2 into moles of H2O so it's the number of moles you start with (1.75 O2) × the number of moles from the element you want (6 H20), then ÷ by the number of moles that the element that you already have (9 O2).
Answer:
Explanation:
Hello,
In this case, ammonia dissociation is:
So the equilibrium expression:
![Kb=\frac{[NH_4^+][OH^-]}{[NH_3]}](https://tex.z-dn.net/?f=Kb%3D%5Cfrac%7B%5BNH_4%5E%2B%5D%5BOH%5E-%5D%7D%7B%5BNH_3%5D%7D)
That in terms of the reaction extent and the initial concentration of ammonia is written as:
Thus, solving by using solver or quadratic equation we find:
Which actually equals the concentration of hydroxyl ion, therefore the pOH is computed:
![pOH=-log([OH^-])=-log(0.00133)=2.88](https://tex.z-dn.net/?f=pOH%3D-log%28%5BOH%5E-%5D%29%3D-log%280.00133%29%3D2.88)
And the pH from the pOH is:
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