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Illusion [34]
2 years ago
5

Someone please HELPPPP

Chemistry
1 answer:
AnnyKZ [126]2 years ago
3 0
It might me b but I am not sure
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Answer:

true

Explanation:

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The process in which water changes from a liquid to a vapor is known as __________.
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Hello!
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What are two processes that result in rocks being broken down into smaller pieces !?
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<span>"Chemical weathering and physical weathering" would be the correct answer

Chemical weathering breaks down the bonds holding the rocks together, and the physical weathering will crush and break them apart.</span>
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"acid is responsible for the odor in rancid butter. a solution of 0.25 m butyric acid has a ph of 2.71. what is the ka for"
Salsk061 [2.6K]

Answer:- The Ka for the acid is 1.53*10^-^5 .

Solution:- In general, monoprotic acid could be represented by HA. The dissociation equation for the ionization of HA is written as:

HA(aq)\rightarrow H^+(aq) + A^-(aq)

Now, we make the ice table for this equation as:

HA(aq)\rightarrow H^+(aq) + A^-(aq)

I 0.25 0 0

C -X +X +X

E (0.25 - X) X X

where, I stands for initial concentration, C stands for change in concentration and E stands for equilibrium concentration.

X is the change in concentration and from ice table it's same as the concentration of hydrogen ion that is calculated from given pH.

Ka = [H^+][A^-]\frac{1}{HA}

Where, Ka is the acid ionization constant. Let's plug in the values.

Ka = \frac{X^2}{0.25-X}

Let's calculate the value of X first using the equation:

pH = -log[H^+][/tex]

on taking antilog ob above equation we get:

[H^+]=10^-^p^H

[H^+]=10^-^2^.^7^1

[H^+] = 0.00195

So, X = 0.001195

Let's plug in this value of X in the equation:-

Ka=\frac{(0.00195)^2}{0.25-0.00195}

Ka=1.53*10^-^5

So, the value of Ka for butyric acid is 1.53*10^-^5 .

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3 years ago
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A scuba diver that ascends to the surface too quickly can experience decompression sickness, which occurs when nitrogen that dis
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Answer:

The factor that will change the volume of the diver's lungs upon reaching the surface is 4

Explanation:

Given data:

Pressure increases 1 atm = 101.325 kPa

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Question: What factor will the volume of the diver's lungs change upon arrival at the surface, V₂/V₁ = ?

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The factor will the volume of the diver's lungs change upon arrival at the surface:

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2 years ago
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