<span>EPA’s Acid Rain Program</span>
Answer:
91hours
Explanation:
Firstly, we calculate the quantity of electricity passed.
Q = It
Q = 34.5t
Since we are dealing with cu2+
Cu2+ + 2e- ———> Cu
From the second law of electrolysis, 1 mole of copper ion will need 2 moles of electrons and thus would be needing half faraday of electricity.
Now one faraday would contain 96500C of electricity, 0.5F would contain = 48,250C of electricity .
The number of moles of copper thus deposited = 34.5t/48,250
We know that the mass of copper deposited equals no of moles of copper multiplied by its atomic mass
15kg = 34.5t/48250 * 64
15,000 * 48250 = 34.5t * 64
t = 327,785s
Converting this to hours means we divide by 3,600
327,785/3600 = 91hours
C. As we know, an atom is made of three parts--protons (+), neutrons (core), and electrons (-) When one of these atoms loses one or more electron(s), it becomes a cation, or a positively charged ion. Inversely, when this atom gains a positively charged ion, [the atom] becomes a negatively charged atom, or an anion. The bond is made through electrostatic attraction, and a bond between these two "halves of a whole", it is known as an ionic bond.
Answer:
p = "Today is Monday" q = "Tomorrow is Tuesday".
Answer:
The answer is
<h2>2.63 g</h2>
Explanation:
The mass of a substance when given the density and volume can be found by using the formula
<h3>mass = Density × volume</h3>
From the question
volume of silver = 0.25 cm³
density = 10.5 g/cm³
The mass is
mass = 10.5 × 0.25 = 2.625
We have the final answer as
<h3>2.63 g</h3>
Hope this helps you