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3 years ago

Kinetic energy is _____.

Chemistry

2 answers:

NeTakaya3 years ago

6 0

The kinetic energy of<span> an object is the </span>energy<span> that it possesses due to its motion.</span>

ankoles [38]3 years ago

5 0

Explanation:

Kinetic energy is defined as the energy obtained by an object due to its motion.

This means that any object which is moving will have kinetic energy because it is in motion.

Mathematically, K.E = $\frac{1}{2}mv^{2}$

where, m = mass of object

v = volume of object

Whereas if an object is not moving and if it is only lying in a certain position then it will have only potential energy.

Thus, we can conclude kinetic energy is the energy obtained by an object due to its motion.

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Use the Henderson-Hasselbalch equation, eq. (3), to calculate the pH expected for a buffer solution prepared from this acid and

notka56 [123]

Answer:

$pH=4.56$

Explanation:

Hello there!

In this case, given the Henderson-Hasselbach equation, it is possible for us to compute the pH by firstly computing the concentration of the acid and the conjugate base; for this purpose we assume that the volume of the total solution is 0.025 L and the molar mass of the sodium base is 234 - 1 + 23 = 256 g/mol as one H is replaced by the Na:

$n_{acid}=\frac{0.2g}{234g/mol}=0.000855mol\\\\n_{base}= \frac{0.2g}{256g/mol}=0.000781mol$

And the concentrations are:

$[acid]=0.000855mol/0.025L=0.0342M$

$[base]=0.000781mol/0.025L=0.0312M$

Then, considering that the Ka of this acid is 2.5x10⁻⁵, we obtain for the pH:

$pH=-log(2.5x10^{-5})+log(\frac{0.0312M}{0.0342M} )\\\\pH=4.60-0.04\\\\pH=4.56$

Best regards!

6 0

2 years ago

Which of the following statements is true?

Fittoniya [83]

Answer:

Es la tercera por qué cuando el material varía va cambiando de estado

Explanation:

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2 years ago

Space shuttle tiles, sandstone, and the glass in quartz halogen lamps are all made out of the same stuff: silicon dioxide. Why d

tankabanditka [31]

Answer:

Explained

Explanation:

The bond angle between the Si-O-Si is 145° .But this can also vary between 100° and 170°, It is because of which the changes in properties is happening. Bond angles can affect the hybridization, lone pair repulsion and electronegativity.

Thus , Space shuttle tiles, sandstone, and the glass in quartz have different properties and are used according to their property.

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2 years ago

You plug in an extension cord and have to be very careful around the electrical outlet. However, you can handle the extension co

evablogger [386]

Because the cord is wrapped in rubber or plastic and they are not good conductors

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2 years ago

Read 2 more answers

Air is composed of nitrogen oxygen and based on that information air can be described as

Vilka [71]

Answer:

Air can be described as: Mass and Mixture of Gases

Mass is defined as how much stuff an object contains - and by stuff, I mean matter, like atoms and molecules. And even though you can't see it, air has a lot of atoms and molecules. Air is a gas (as opposed to a liquid or a solid) and contains about 78% nitrogen, 21% oxygen, and 1% argon.

Explanation:

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3 years ago