First calculate the electric charge used to deposit 1.0 g Pt
C = (1.0 g Pt) (1 mol Pt / 195.1 g Pt) ( 2 mol e / 1 mol Pt)
( 96485 C / 1 mol e)
C = 989.08 C
C = It
Where I is the current
T is the time
T = C / i
T = 989.08 C / 0.15 A
T = 6593.88 s
T = 1.83 hrs
Food web shows the cycle of energy that is transferred from one organism to another in that web.
<u>Explanation:</u>
A food web (or nourishment cycle) is the natural interconnection of natural pecking orders and a graphical portrayal (generally a picture) of what-eats-what in an environmental network. Another name for nourishment web is customer asset framework.
Arrows on a food web, or food web, speak to the progression of vitality. The situation of the bolts in an evolved way of life or nourishment web is significant. The bolts consistently show the heading of the vitality as it is moved starting with one life form then onto the next. The progression of vitality can likewise be spoken to inside a vitality pyramid.
Answer:

Explanation:
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In this case, since the modelling of titration problems can be approached via the Henderson-Hasselbach equation to set up a relationship between pH, pKa and the concentration of the acid and its conjugate base, we can write:
![pH=pKa+log(\frac{[NO_2^-]}{[HNO_2]} )](https://tex.z-dn.net/?f=pH%3DpKa%2Blog%28%5Cfrac%7B%5BNO_2%5E-%5D%7D%7B%5BHNO_2%5D%7D%20%29)
Whereas the pH is given as 3.14 and the concentrations are the same, that is why the pH would be equal to the pKa as the logarithm gets 0 (log(1)=0); thus, we can calculate the Ka via:

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The formula is Al2O<span>3. 2 aluminium and 3 oxygen
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The electrons hold onto the nucleus because of the magnetism and the electricity. <span />