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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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il63 [147K]

Answer:

7-c=760

Explanation:

the answer is 7-c=7698

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4 years ago

When an excited electron in a hydrogen atom falls from ????=5 to ????=2, a photon of blue light is emitted. If an excited electr

poizon [28]

Answer:

n = 3

Explanation:

Given the formula for the transition energy of an atom with 1 electron:

$E=-13.6*Z^{2}*(\frac{1}{n_{f}^{2}}-\frac{1}{n_{i}^{2}} ) eV$

For the H transition n=5 to n=2:

$E=-13.6*(\frac{1}{4}-\frac{1}{25} ) eV=-2.856 eV$

Then we solve for nf with Z=2 (Helium)

$n_{f}=\sqrt{\frac{n_{i}^{2}*Z^{2}*13.6 eV }{2.856eV*n_{i}^{2}+13.6eV*Z^{2}} }$

$n_{f}=\sqrt{\frac{4^{2}*2^{2}*13.6 eV }{2.856eV*4^{2}+13.6eV*2^{2}} }=3$

Is near 3, actually the energy of the transitions are:

H (5⇒2) = -2.85 eV = 434 nm (Dark blue)

He (4⇒3) = -2.64 eV = 469 nm (Light blue)

I thought it was cool to see the actual colors. Included them.

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3 years ago

The roots of plants are important to photosynthesis because they...

lina2011 [118]

Answer:

$\boxed {\boxed {\sf C. \ Provide \ the \ water \ needed}}$

Explanation:

Photosynthesis is an extremely important process for plants, algae, and some bacteria. It helps create their "food", which is glucose. It is turned into energy so the organism can grow, repair damages, and carry out other processes.

The equation for photosynthesis is as follows:

$H_2O+CO_2+energy \rightarrow C_6H_{12}O_6 + O_2$

Water, carbon dioxide, and light energy from the sun are converted to glucose and oxygen.

Roots are important for obtaining water. Since they reach into the soil, they can absorb the water. Then, capillary action draws the water up the stem into the xylem and then into the leaves, where photosynthesis occurs.

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3 years ago

3. Classify each reaction as exothermic or endothermic. (4 marks)

love history [14]

Energy + SO2(g) -----> S(g) + O2(g) is an edothermic reaction owing to te fact that energy is a reactant in the equation.

<h3>What is an endothermic reaction?</h3>

An endothermic reaction is one in wioch energy is supplied to the system in order to enable the breakdown of bonds. Hence, the reaction vessel feels cool as energy is withdrawn from the surroundings.

The reaction; Energy + SO2(g) -----> S(g) + O2(g) is an edothermic reaction since energy is a reactant in the equation.

Learn more about endothermic reaction: brainly.com/question/10373907

6 0

3 years ago

What is the mass in grams of 5.2 moles of NaCl? 303.89 g 0.09 g 119.6 g 1828

Vitek1552 [10]

Explanation:

mole=mass/molar mass

mass= mole×molar mass

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m= 5.2×58.5

m= 304.2g

6 0

3 years ago