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Kazeer [188]
4 years ago
9

Why does Earthquakes occur?

Chemistry
1 answer:
Annette [7]4 years ago
6 0
Shifting plates, underwater volcanoes. many different variables come in play
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A sample of helium has a temperature of 450 K. The gas is cooled to 248.9 K at which time the gas occupies 103.4 L? Assume press
Umnica [9.8K]

Answer:

\boxed{\text{163.3 L}}

Explanation:

The pressure is constant, so, to calculate the volume, we can use Charles' Law:

\dfrac{V_{1}}{T_{1}} = \dfrac{V_{2}}{T_{2}}

Data:

V₁ = ?;            T₁ =    450 K

V₂ = 103.4 L; T₂ = 284.9 K

Calculation:

\dfrac{ V_{1}}{450} = \dfrac{ 103.4}{284.9}\\\\{ V_{1}} = 450 \times \dfrac{103.4}{284.9}\\\\ = \textbf{163.3 L}\\\text{The original volume of the helium was $\boxed{\textbf{163.3 L}}$}

5 0
3 years ago
Read 2 more answers
Pick any habitat and model a food web to illustrate the flow of food energy. Those were your teacher’s instructions. You created
Dafna11 [192]

It's not a food web it's a food chain. I just did the exam a few minutes ago. Please mark it Brainliest.

5 0
3 years ago
What is the octet rule? How does it affect how compounds are formed?
Stells [14]

Explanation:

The octet rule is a rule that governs how atoms combines with each other. It postulates that atoms will prefer to have the stable configuration of noble gases by having eight electrons in their outermost shell.

Compounds forms when atoms combines to attain stability. The atoms of some elements shows no tendency to combine with themselves or other kinds of atoms because their outer energy levels are completely filled.

The driving force for many interatomic bonding is the tendency to have completely filled outer energy levels like the noble gases.

The various interatomic  bonds are formed in the bid of the atoms to be isoelectronic in the outer energy level with the noble gases.

This more stable form may be achieved by losing, or gaining electrons or the sharing of pairs of electrons.

Learn more:

octet brainly.com/question/6683097

#learnwithBrainly

4 0
3 years ago
HELP WILL MARK BRAINLIEST!WORTH 15 POINTS!
omeli [17]

Answer: I can't see the image

Explanation: N/A

5 0
3 years ago
Which Earth motion describes the wobbling of the Earth around its precessional axis and
Alexeev081 [22]

Answer:

Nutation

Explanation:

The counterclockwise rotation of planet earth around its own axis is defined as the Earth Rotation. The earth rotates about the line called "the axis of rotation," it is an imaginary line that passes through the North and South Poles of the planet, which the earth rotates about.

Hence, earth rotates once in about 24 hours with respect to the Sun, from West to East and thus giving rise to;

a. Day and night

b. Seasons

The Earth motion which describes the wobbling of the Earth around its precessional axis and could alter the amount of seasonal effects is known as nutation.

Basically, nutation usually occurs when the precessional motion of a planetary body such as planet earth experience some form of irregularities when it is rotating.

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3 years ago
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