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3 years ago

How is ozone produced?

Chemistry

2 answers:

GrogVix [38]3 years ago

7 0

Answer:

First: A. One molecule of oxygen is split into two atoms.

Second: C. One atom of oxygen collides with one molecule of oxygen.

Explanation:

Ozone (O3) is a molecule composed of three chemically bonded oxygen atoms, unlike oxygen, which contains 2 atoms. It may seem that, as they are composed of the same atoms, oxygen and ozone are alike, but the truth is that they are very different.

The O2 has no smell or color, The O3 instead has a blue color, a very intense smell and is even harmful to health. Unless it is in the stratosphere, it is essential for life on Earth. In addition to this, the O3 is much scarcer.

O3 is produced by a photochemical reaction

First:

02 + hv --> O + O (λ = 242.4 nm)

where hv is a photon of absorbed energy light

Second:

02 + 0 + M --> 03 + M

zubka84 [21]3 years ago

3 0

The answer is A. the solar ultraviolet ray breaks the molecule apart

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Emma strikes a match and sets some logs on fire. As the fire burns, which two forms of energy are released?

Ivanshal [37]

Answer:

Explanation:

There are changes in the chemical composition of the word.

There's light energy given off.

There's heat energy given up.

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3 years ago

Which is the best explanation of why heat is released when

vazorg [7]

The answers is A. Reales energy stored in chemical bonds

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3 years ago

How many moles of hydrogen are in the sample? Round your answer to 4 significant digits.

finlep [7]

Answer:

1.56 mol H₂

Explanation:

Mg₃(Si₂O₅)₂(OH)₂

There are 4 Si moles per Mg₃(Si₂O₅)₂(OH)₂ mol. With that in mind we can calculate how many Mg₃(Si₂O₅)₂(OH)₂ moles are there in the sample, using the given number of silicon moles:

3.120 mol Si * $\frac{1molMg_3(Si_2O_5)_2(OH)_2}{4molSi}$ = 0.78 mol Mg₃(Si₂O₅)₂(OH)₂

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0.78 mol Mg₃(Si₂O₅)₂(OH)₂ * 2 = 1.56 mol H₂

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3 years ago

58. Which of the following aqueous solutions has the lowest freezing point? A. 0.2 M NaCl B. 0.2 M FeCl3 C. 0.2M sucros D. 0.2 M

m_a_m_a [10]

The correct option is D. 0.2 M CaCl2 is has the lowest freezing point.

<h3>What is aqueous solution?</h3>

When one significance liquefies into another, a solution is formed. A solution is a homogenous mixture consisting of a solute dissolved into a solvent. The solute is the essence that is being dissolved, while the solvent is the dissolving medium. Solutions can be formed with multiple different classifications and forms of solutes and solvents. In this branch, we will focus on a resolution where the solvent is water.

An aqueous solution is a moisture that contains one or more dissolved essence. The dissolved importance in an aqueous solution may be solids, gases, or different liquids.
In directive to be a true solution, an assortment must be stable. When sugar is fully dissolved into moisture, it can stand for an undetermined amount of time, and the sugar will not recompense out of the solution. Further, if the sugar-water solution is passed through a filter, it will stay with the water.
This is because the liquefied particles in a resolution are very small, usually less than 1nm in diameter. Solute particles can be atoms, ions, or molecules, counting on the type of essence that has been dissolved.

To learn more about aqueous solution, refer to:

brainly.com/question/14469428

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2 years ago

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butalik [34]

Answer:

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2 years ago