What is the surface area of the given figure?

Question 7 options: The cell potential of an electrochemical cell made of an Fe, Fe2 half-cell and a Pb, Pb2 half-cell is _____

larisa [96]

Answer: Thus the cell potential of an electrochemical cell is +0.28 V

Explanation:

The calculation of cell potential is done by :

$E^0=E^0_{cathode}- E^0_{anode}$

Where both $E^0$ are standard reduction potentials.

$E^0_{[Fe^{2+}/Fe]}= -0.41V$

$E^0_{[Pb^{2+}/Pb]}=-0.13V$

As Reduction takes place easily if the standard reduction potential is higher(positive) and oxidation takes place easily if the standard reduction potential is less(more negative). Thus iron acts as anode and lead acts as cathode.

$E^0=E^0_{[Pb^{2+}/Pb]}- E^0_{[Fe^{2+}/Fe]}$

$E^0=-0.13- (-0.41V)=0.28V$

Thus the cell potential of an electrochemical cell is +0.28 V

5 0

3 years ago

The law of superpositin is most relivate when what type of rock is being studied

Bumek [7]

The rock that is being studied is

3 0

4 years ago

A sample of 42 mL of carbon dioxide gas was placed in a piston in order to maintain a constant 101 kPa of pressure.

Lilit [14]

Answer:

The answer to your question is 33.4 ml

Explanation:

Data

volume 1 = V1 = 42 ml

temperature 1 = T1 = 20°C

temperature 2 = T2 = -60°C

Volume 2 = V2 = x

Process

1.- Convert celsius to kelvin

T1 = 20 + 273 = 293°K

T2 = -60 + 273 = 233°K

2.- Use the Charles' law to solve this problem

$\frac{V1}{T1} = \frac{V2}{T2}$

Solve for V2

V2 = $\frac{V1T2}{T1}$

3.- Substitution

V2 = $\frac{(42)(233)}{293}$

4.- Simplification

V2 = $\frac{9786}{293}$

5.- Result

V2 = 33.4ml

3 0

3 years ago

It’s is the same one from my recent ones

UkoKoshka [18]

<h2>9. Given : P + O2 = P2O5</h2>

Balanced Chemical Equation: 4P + 5O2 = 2P2O5

Reactant Product

P = (1) 4 | P = (2) 4

O = (2) 10 | O = (5) 10

Reaction Information

Phosphorus + Dioxygen = Phosphorus Pentoxide

Reaction Type: Synthesis

<h2>10. Given: HCl + NaOH = NaCl + H2O </h2>

Reactant Product

H = 2 | H = 2

Cl = 1 | Cl = 1

Na = 1 | Na = 1

O = 1 | O = 1

<h3>Chemical Equation is already in balance.</h3>

Reaction Information: Hydrogen Chloride + Sodium Hydroxide = Sodium Chloride + Water

Reaction Type : Double Displacement (Acid-Base)

How to balance chemical equation?

brainly.com/question/15939935

5 0

4 years ago

What did George Washington Carver discover?

svetoff [14.1K]

George Washington Carver was a prominent American scientist and inventor in the early 1900s. Carver developed hundreds of products using the peanut, sweet potatoes and soybeans. He also was a champion of crop rotation and agricultural education.

6 0

4 years ago