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Pie
3 years ago
10

Electrolysis is used in the electroplating of metals. The same amount of current is passed through separate aqueous solutions of

CuSO4, Sn(SO4)2 and Cr2(SO4)3 in separate electrolytic cells for the same amount of time. State and explain which cell would deposit the greatest amount (in mol) of metal. Identify the electrode at which the metal is deposited.
Chemistry
1 answer:
Aleonysh [2.5K]3 years ago
3 0

Answer:

CuSO4 cell will have the greatest amount of deposit among all three. The deposit will occur at the cathode

Explanation:

The valence of the elements in this case is as follows -

Cu - 2e-

Sn - 4e-

Cr - 3e-

CuSO4 cell will have the greatest amount of deposit among all three

The atoms of copper metal will deposit at the cathode. At the cathode, the least number of moles of electrons needed .

Hence, more amount of copper  can be extracted out by the electrolyte

 

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In the deep space between galaxies, the density of atoms is as low as 106 atoms/m3, and the temperature is a frigid 3.0 K. What
Savatey [412]

Answer:

4.388*10^-^2^1

Explanation:

Given:

N/V= 106 atoms/m^3

T=3.0K

we know the values of

K_{b} =1.38*10^-^2^3 J/K

N_{A} =6.02*10^2^3/mol

Formula:

PV=NK_{b} T

rearranging the formula and substituting values

P=(NK_{b} T)/V

P=(106)(1.38*10^-^2^3)(3)

P=4.388 *10^-^2^1 Pa

5 0
3 years ago
How much HCl is produced from the reaction of an excess of HSbCl4 with 3 moles H2S in the following reaction? HSbCl4 + H2S → Sb2
Fudgin [204]

Answer:

We will produce 8.0 moles of HCl , this is 291.7 grams HCl

Explanation:

Step 1: Data given

Number moles of H2S = 3.0 moles

Step 2: The balanced equation

2HSbCl4 + 3H2S → Sb2S3 + 8HCl

Step 3: Calculate moles HCl

For 2 moles HSbCl4 we need 3 moles H2S to produce 1mol Sb2S3 and 8 moles HCl

For 3.0 moles H2S we'll have 8.0 moles HCl

Step 4: Calculate mass HCl

Mass HCl = moles HCl * molar mass HCl

Mass HCl = 8.0 moles * 36.46 g/mol

Mass HCl = 291.7 grams

We will produce 8.0 moles of HCl , this is 291.7 grams HCl

8 0
4 years ago
Imagine you are and astronaut returning to Earth from a space mission to Mars. In which order would you pass through the layers
mafiozo [28]
It is C. That is the answer. Mate rate 8/8
4 0
3 years ago
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A gas has a volume of 590 mL at a temperature of -55.0 Celsius what volume will the gas occupy at 30°C show your work
d1i1m1o1n [39]
At -55°,volume=590ml
At 30°,volume=?
;-55°=590ml
30°=V
V=30/-55×590ml
V=-321.82ml
but we don't have a negative volume so V=321.82ml
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3 years ago
How do the bonding and antibonding MOs formed from a given pair of AOs compare to each other with respect to:
Ksenya-84 [330]

Bonding MO's have lower energy than antibonding MO's. The bonding MO's lower energy, even lower than its constituent atomic orbitals, accounts for the stability of a molecule in relation to its individual atoms. However, the sum of energy of the MO's must equal the sum of energy of the AO's.

<h3>What is atomic orbital?</h3>

An atomic orbital is a function in atomic theory and quantum mechanics that describes the location and wave-like behavior of an electron in an atom. This formula can be used to calculate the likelihood of locating any atom's electron in any given location surrounding the nucleus. The phrase atomic orbital can also refer to the actual region or place where the electron is projected to be present given the orbital's mathematical form.

Each orbital in an atom is defined by a set of values of the three quantum numbers n, l, and ml, which correspond to the energy, angular momentum, and an angular momentum vector component of the electron, respectively (magnetic quantum number).

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2 years ago
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