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Makovka662 [10]
3 years ago
11

The job the part does within organism is the

Chemistry
1 answer:
kramer3 years ago
7 0
The answer it the function
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A 29.2 mL sample of a 0.458 M aqueous hydrofluoric acid solution is titrated with a 0.337 M aqueous sodium hydroxide solution. W
Svetach [21]

Answer:

3.51

Explanation:

Before any sodium hydroxide has been added, the pH is that of the aqueous hydrofluoric acid solution.

HF is a weak acid that dissociates according to the following equation.

HF(aq) ⇄ H⁺(aq) + F⁻(aq)      Ka = 6.76 × 10⁻⁴

We can find [H⁺] using the following expression.

[H⁺] = √(Ca × Ka)

where

Ca: concentration of the acid

Ka: acid dissociation constant

[H⁺] = √(Ca × Ka)

[H⁺] = √(0.458 × 6.76 × 10⁻⁴)

[H⁺] = 3.10 × 10⁻⁴ M

The pH is:

pH = -log [H⁺]

pH = -log 3.10 × 10⁻⁴ = 3.51

4 0
3 years ago
The whistle of a teakettle has a greater frequency than a drumbeat. True or false and why
Olenka [21]

Answer:

how was enacting the GI bill Like teaching someone how to fish

3 0
2 years ago
Define a function ComputeGasVolume that returns the volume of a gas given parameters pressure, temperature, and moles. Use the g
andre [41]

Answer: A function can be defined as a relation in which one thing is dependent on another for its value.

Explanation: Given R = 8.314J/mol*k

PV = nRT

V = nRT/ P

V = 8.314RT / P (cm^3)

Volume of gas =(( 8.314 * R* T) / P ) cm3

7 0
3 years ago
I really need help with this. Be serious. If you answer something random just for the points I will report you to brainly.
sashaice [31]

Answer:

It get thicker beacause the mid ocean

Explanation:

Because when it gets moved back the heat rises and it builds up to be thicker.

8 0
2 years ago
3.) All matter has both physical and chemical properties. A physical property is one that does not change the chemical nature of
dexar [7]

Answer:

D

Explanation:

It would be D because you are observing the reaction and don’t change anything

8 0
2 years ago
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