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Sholpan [36]
3 years ago
8

When water vapor cools it condenses select the number that represents this process on the diagram

Chemistry
2 answers:
TiliK225 [7]3 years ago
6 0
2 is the correct answer.
Sergio [31]3 years ago
3 0
You posted this question 3 times already


Anyway, I answered on one of them and my explanation is also on that one

Number 3
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Given that w for water is 2. 4×10−14 m^2 at 37 °C. Calculate the ph of a neutral aqueous solution at 37 °c, which is the normal
alexgriva [62]

The pH of a neutral aqueous solution at 37°C is 6.8.

<h3>What is Kw? </h3>

Kw is defined as the dissociation, which is also known as self-ionization, constant of water. this is an equilibrium constant, and its expression is:

Kw = [OH⁻] . [H₃O⁺]

Neutral pH determines that the concentrations of OH⁻ and H₃O⁺ are equal.

<h3>Calculation</h3>

Let us suppose concentration of OH and H₃O⁺ is x, to calculate it:

Kw =[OH⁻] . [H₃O⁺] = x²

x² = 2.4 × 10⁻¹⁴ M²

x = 1.5919 × 10⁻⁷ M

Hence, the concentration of OH and H₃O⁺ (x) = [H₃O⁺] = [OH⁻] = 1.5919×10⁻⁷ M

pH = -log[H₃O⁺] = -log( 1.5919×10⁻⁷ M)

pH = 6.8

Thus, we find that the pH of a neutral aqueous solution at 37 °c (which is the normal human body temperature) is 6.8.

learn more about pH:

brainly.com/question/9529394

#SPJ4

3 0
1 year ago
What is the total number of different elements present in NH4NO3
Nookie1986 [14]
 <span>3 elements 
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2 nitrogen 4 hydrogen and 3 oxygens 
there are only 3 different elements</span>
4 0
3 years ago
Read 2 more answers
How many moles is 2.2 x 1023 atoms of Fe?
kow [346]

Answer:

it's 3.77 moles

Explanation:

Pls give brainliest :)

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2 years ago
The chemical bonding in sodium phosphate, Na3PO4, is classified as:
fiasKO [112]
<span>Ionic bonding between sodium and phosphate ions.</span>
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1. The electronegativities of the period-3 elements are listed on the transparency. Calculate the
Firdavs [7]
The correct answer is c. Please give me brainlest let me know if it’s correct or not thanks bye
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