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Makovka662 [10]

3 years ago

13

What is the source of energy for an earthquake

2 answers:

Alla [95]3 years ago

7 0

Answer:

Seismic waves

Explanation:

The seismic P and S waves are two waves that releases energy during propagation, resulting in the sudden shaking of the earth, which is commonly known as the earthquake.

The point from which the earthquake originates, is known as the focus and the location that is directly above the focus, on the ground surface is known as the epicenter.

The P waves and S waves are primary and secondary waves respectively. The P waves are characterized by the contraction and expansion in its direction of propagation. Whereas the S waves are shear waves.

MA_775_DIABLO [31]3 years ago

3 0

Seismic waves is the energy of and earthquake aka Elastic Energy

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1: At which temperature would a reaction withΔH = -102 kJ/mol, ΔS = -0.188 kJ/(mol×K) be spontaneous? 2: At which temperature wo

Naddik [55]

Answer:

1: At temperatures below 542.55 K

2: At temperatures above 660 K

Explanation:

Hello there!

In this case, according to the thermodynamic definition of the Gibbs free energy, it is possible to write the following expression:

$\Delta G=\Delta H-T\Delta S$

Whereas ΔG=0 for the spontaneous transition. In such a way, we proceed as follows:

1:

$0=\Delta H-T\Delta S\\\\T=\frac{-102kJ/mol}{-0.188kJ/mol-K} \\\\T=542.55K$

It means that at temperatures lower than 542.55 K the reaction will be spontaneous.

2:

$0=\Delta H-T\Delta S\\\\T=\frac{132kJ/mol}{0.200kJ/mol-K} \\\\T=660K$

It means that at temperatures higher than 660 K the reaction will be spontaneous.

Best regards!

7 0

2 years ago

If an atom has three shell and number of valence electrons are two. Is this element metal

cluponka [151]

Answer:

Metal

Element: Calcium

Valency: 2

Explanation:

To find the element, let's use the periodic table. (Look below)

We already went past 3 shells, just need the 2 electrons after it.

Just skip to the 4th row and count 2 to the right

We end up at Calcium.

Calcium is a metal and we're also on the alkaline earth metals column.

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3 0

3 years ago