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3 years ago

I NEED HALP

Chemistry

1 answer:

irinina [24]3 years ago

4 0

Answer:

C. New ocean crust forms.

Explanation:

At divergent margins, it is true that new ocean crusts forms at the margins.

Along a divergent margin, two lithospheric plates are moving apart from one another.

Usually, when this occurs between two oceanic plates, the underlying mantle upwells to fill the void. The cooling and solidifying mantlic materials furnishes the formation of a new crust.

This is the oceanic crust.

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Law Incorporation [45]

Answer:

I guess this answer is c

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3 years ago

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A certain element x has four isotopes. 4.350% of x has a mass of 49.94605 amu. 83.79% of x has a mass of 51.94051 amu. 9.500% of

nasty-shy [4]

Average atomic mass of an element is the sum of atomic mass of its isotopes multiplied by their respective percentage abundance.

There are four isotopes of element X:

1. 4.350 % with mass 49.94605 amu

2. 83.79% with mass 51.94051 amu

3. 9.5% with mass 52.94065 amu

4. 2.360% with mass 53.93888 amu

Thus, average atomic mass will be:

$=49.94605(\frac{4.350}{100})+51.94051(\frac{83.79}{100})+52.95065(\frac{9.5}{100})+53.93888(\frac{2.360}{100})$

Or,

$Average atomic mass=2.173 amu+43.52 amu+5.029 amu+1.273 amu=51.99 amu$

Therefore, average atomic mass of element X will be 51.99 amu (four significant figures)

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3 years ago

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Which of the following is true concerning ψ²? A) ψ² describes the probability of finding an electron in space. B) ψ² describes t

Ilia_Sergeevich [38]

Answer:

A) ψ² describes the probability of finding an electron in space.

Explanation:

The Austrian physicist Erwin Schrödinger formulated an equation that describes the behavior and energies of submicroscopic particles in general.

The Schrödinger equation incorporates both particle behavior, in terms of mass m, and wave behavior, in terms of a wave function ψ, which depends on the location in space of the system (such as an electron in an atom).

The probability of finding the electron in a certain region in space is proportional to the square of the wave function, ψ². According to wave theory, the intensity of light is proportional to the square of the amplitude of the wave, or ψ². The most likely place to find a photon is where the intensity is greatest, that is, where the value of ψ² is greatest. A similar argument associates ψ² with the likelihood of finding an electron in regions surrounding the nucleus.

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Leokris [45]

Gravity and thrust work against eachother

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What does relative abundance mean

fgiga [73]

Relative species abundance is a component of biodiversity and refers to how common or rare a species is relative to other species in a defined location or community. Relative abundance is the percent composition of an organism of a particular kind relative to the total number of organisms in the area.

I don't know if your looking for this exact definition so i'm sorry if i'm wrong

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3 years ago