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3 years ago

Exposure of silver Chloride to sunlight for a longduration turns grey due to

Chemistry

1 answer:

Tema [17]3 years ago

5 0

Answer:

Exposure of silver chloride to sunlight for a long duration turns grey due to photolytic decomposition i.e decomposition in the presence of sunlight.

Explanation:

When silver chloride, AgCl is exposed to sunlight for a long time, it will undergo decomposition as the sunlight provides sufficient energy needed to decomposed the salt, AgCl to metallic silver and chlorine gas. This can be seen in the equation below:

2AgCl —> 2Ag + Cl2

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Iridium has only two naturally occurring isotopes. Ir-191 with arelative mass of 190.96058 and Ir-193 with a relative mass of192

OLEGan [10]

<u>Answer:</u> The fractional abundance of Ir-191 is 0.372

<u>Explanation:</u>

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

$\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i$ .....(1)

Let the fractional abundance of Ir-191 be x and that of Ir-193 isotope be (1-x)

<u>For isotope 1 (Ir-191):</u>

Mass of isotope 1 = 190.96058 amu

Fractional abundance of Ir-191 = x

<u>For isotope 1 (Ir-193):</u>

Mass of isotope 1 = 192.96292 amu

Fractional abundance of Ir-193 = (1 - x)

Average atomic mass of iridium = 192.217 amu

Putting values in equation 1, we get:

$192.217=[(190.96058\times x)+(192.96292\times (1-x))]\\\\x=0.372$

Hence, the fractional abundance of Ir-191 is 0.372

6 0

3 years ago

How many grams of Cl2 are in 1.20 x 1024 Cl atoms?

Vaselesa [24]

<h3>Answer:</h3>

70.906 g

<h3>Explanation:</h3>

We are given;

Atoms of Chlorine = 1.2 × 10^24 atoms

We are required to calculate the mass of Chlorine

We know that 1 mole of an element contains atoms equivalent to the Avogadro's number, 6.022 × 10^23.
That is , 1 mole of an element = 6.022 × 10^23 atoms

Therefore; 1 mole of Chlorine = 6.022 × 10^23 atoms

But since Chlorine gas is a molecule;

1 mole of Chlorine gas = 2 × 6.022 × 10^23 atoms

But, molar mass of Chlorine gas = 70.906 g/mol

Then;

70.906 g Of chlorine gas = 2 × 6.022 × 10^23 atoms

= 1.20 × 10^24 atoms

Thus;

For 1.2 × 10^24 atoms ;

= ( 70.906 g/mol × 1.2 × 10^24 atoms ) ÷ (1.20 × 10^24 atoms)

Therefore, 1.20 × 10^24 atoms of chlorine contains a mass of 70.906 g

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3 years ago

What is the expected number of valence electrons in an atom of the element flerovium in ground state

ehidna [41]

Flerovium at its ground state is solid. It has electron configuration of [Rn]5f¹⁴6d¹⁰7s²7p². The expected number of valence electrons in a flerovium atom is 2. A ground state is the most stable state of an atom at satndard temperature and pressure.

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3 years ago

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Mariulka [41]

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3 years ago

What makes matter change from one state to another?

posledela

Answer: Adding or removing energy from matter

Explanation:

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2 years ago

Exposure of silver Chloride to sunlight for a longduration turns grey due to​

Exposure of silver Chloride to sunlight for a longduration turns grey due to