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Alja [10]
1 year ago
9

Atoms of what class of elements are used to absorb electrons in electron-dense stains?

Chemistry
1 answer:
lesantik [10]1 year ago
8 0

The elements of heavy metals are used to absorb electrons in electron-dense stains.

<h3>What are heavy metals?</h3>

A heavy metals are generally defined as metals with relatively high densities, atomic weight and atomic number.

They toxic and poisonous in nature. They occurs naturally and are very essential to life.

Arsenic, cadmium, lead, copper, nickel and mercury are the most commonly used heavy metals.

Electron staining means to absorb heavy metals of high scattering power to biological specimens which exhibit a small scattering power for electrons.

Thus, the elements of heavy metals are used to absorb electrons in electron-dense stains.

To learn more about  heavy metals, refer to the link below:

brainly.com/question/3937595

#SPJ4

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An artifact originally had 16 grams of​ carbon-14 present. the decay model upper a equals 16 e superscript negative 0.000121 ta=
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<u>Given:</u>

Initial amount of carbon, A₀ = 16 g

Decay model = 16exp(-0.000121t)

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<u>To determine:</u>

the amount of C-14 after 90769076 years

<u>Explanation:</u>

The radioactive decay model can be expressed as:

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How many grams of NH3 can be produced from 2.30 mol of N2 and excess H2.
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<h3>Answer:</h3>

78.34 g

<h3>Explanation:</h3>

From the question we are given;

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<h3>Step 1: Writing the balanced equation for the reaction </h3>

The Balanced equation for the reaction is;

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<h3>Step 2: Calculating the number of moles of NH₃</h3>

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Therefore, the mole ratio of N₂ to NH₃ is 1 : 2

Thus, Moles of NH₃ = Moles of N₂ × 2

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