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yKpoI14uk [10]
3 years ago
12

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

[ Zn2+] = 1.0 M and [Pb2+] = 2.0⋅10−4 M. Pb2+ (aq) + Zn (s) → Zn2+ (aq) + Pb (s)
Chemistry
1 answer:
Natasha_Volkova [10]3 years ago
5 0

Answer: 0.52V

Explanation:

Ecell = Ecell(standard) - [(0.0592 logQ)/n]

Q = product of the quotient

n = no of electrons transferred = 2

Ecell = 0.63 - [(0.0592*Log(1 / 2.0 * 10-4) / 2]

Ecell = 0.63 - 0.0194

Ecell = 0.5205V

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Marysya12 [62]
Number 3:
Chlorine, Sodium, Sulfate, Magnesium, and Calcium.
Number 4:
The salt Increases/Decreases the density.
Hope this helps you! 
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5 0
3 years ago
A standard backpack is approximately 30cm x 30cm x 40cm. Suppose you find a hoard of pure gold while treasure hunting in the wil
Blizzard [7]

Explanation:

The dimensions of a standard backpack is 30cm x 30cm x 40cm

The mass of an average student is 70 kg

We know that, the density of gold is 19.3 g/cm³.

Let m be the mass of the backpack. So,

\text{density}=\dfrac{\text{mass}}{\text{volume}}\\\\m=d\times V\\\\m=19.3\ g/cm^3\times (30\times 30\times 40)\ cm^3\\\\m=694800\ g\\\\\text{or}\\\\m=694.8\ kg\approx 700\ kg

An average student has a mass of 70 kg. If we compare the mass of student and mass of backpack, we find that the backpack is 10 times of the mass of the student.

8 0
3 years ago
Is garlic powder a pure substance
CaHeK987 [17]

Answer: most store-bought isnt

Explanation:

there typically a lot of addivitves

8 0
3 years ago
What is the chemical formula of calcium chloride?
Luba_88 [7]
<h3>✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽</h3>

➷ It would be CaCl2

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

7 0
3 years ago
Read 2 more answers
A chemical change in which a single compound is broken down into two or more simpler products.
andreyandreev [35.5K]

Answer:

Decomposition or cracking

Explanation:

Decomposition reaction is a chemical change in which a single compound is broken down into two or more simpler products.

  For example;

                   A     →    B   +  C

 The driving force of such reaction is the high positive heat of formation of the compound which indicates that they are highly unstable.

Some stable compounds also decompose when subjected to high temperature and pressure.

5 0
3 years ago
Read 2 more answers
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