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2 years ago

What is fractional distinction

Chemistry

1 answer:

____ [38]2 years ago

3 0

Explanation:

which one of the following a correct way of finding current?

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The standard cell potential (E°cell) for the reaction below is +0.63 V. The cell potential for this reaction is __________V when

Elodia [21]

Answer: The cell potential of the above reaction is 0.52 V

Explanation:

The given chemical equation follows:

$Pb^{2+}(aq.)+Zn(s)\rightarrow Zn^{2+}(aq.)+Pb(s)$

Oxidation half reaction: $Zn(s)\rightarrow Zn^{2+}(aq.)+2e^-$

Reduction half reaction: $Pb^{2+}(aq.)+2e^-\rightarrow Pb(s)$

To calculate the EMF of the cell, we use the Nernst equation, which is:

$E_{cell}=E^o_{cell}-\frac{0.059}{n}\log \frac{[Zn^{2+}]}{[Pb^{2+}]}$

where,

$E_{cell}$ = electrode potential of the cell = ? V

$E^o_{cell}$ = standard electrode potential of the cell = 0.63 V

n = number of electrons exchanged = 2

$[Zn^{2+}]=1.0M$

$[Pb^{2+}]=2.0\times 10^{-4}M$

Putting values in above equation, we get:

$E_{cell}=0.63-\frac{0.059}{2}\times \log(\frac{1.0}{2.0\times 10^{-4}})\\\\E_{cell}=0.52V$

Hence, the cell potential of the above reaction is 0.52 V

7 0

3 years ago

Atoms of one element are converted to atoms of another element through

lubasha [3.4K]

Atoms of one element are converted to atoms of another element through transmutation or nuclear transmutation.

6 0

3 years ago

What is arcenic? Who can tell me!

Luda [366]

Explanation:

Arsenic is a solid chemical element that is used especially in wood preservatives, alloys, and semiconductors and is extremely toxic in both pure and combined forms.

A poisonous trioxide As2O3 or As4O6 of arsenic is used especially as an insecticide or weed killer.

7 0

3 years ago

Read 2 more answers

C. What might have happened in Kush and Egypt if Kush had developed iron weapons?

ladessa [460]

Answer:

Kush would have been able to fight better and probably would have never been invaded by Egypt, and they could have beaten the Assyrians when they tried to takeover Egypt. And the 25th dynasty would have continued.

Explanation:

that is my explanation and answer^

3 0

3 years ago

What is the mass of sulfuric acid in 50.0 mL of a 6.00 M solution?

Evgesh-ka [11]

Answer:

The answer to your question is 29.4 grams of H₂SO₄

Explanation:

Data

mass of sulfuric acid

volume = 50 ml

Molarity = 6 M

Process

1.- Write the formula of Molarity

Molarity = moles / volume

-Solve for moles

moles = Molarity x volume

-Substitution

moles = 6 x 0.05

-result

moles = 0.3

2.- Calculate the molar mass of Sulfuric acid

H₂SO₄ = (1 x 2) + (32 x 1) + (16 x 4) = 2 + 32 + 64 = 98 g

3.- Calculate the mass in the solution

98 g of H₂SO₄ ---------------- 1 mol

x ----------------- 0.3 moles

x = (0.3 x 98) / 1

x = 29.4 grams of H₂SO₄

6 0

3 years ago

What is fractional distinction​

What is fractional distinction