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3 years ago

What are the main sources of outdoor air pollution and how do they cause smog?

Chemistry

1 answer:

olchik [2.2K]3 years ago

8 0

Answer:

The common sources of outdoor air pollution are emissions caused by combustion processes from motor vehicles, solid fuel burning and industry. Other pollution sources include smoke from bushfires, windblown dust, and biogenic emissions from vegetation (pollen and mold spores).

smog is produced when sunlight reacts with nitrogen oxides in the atmosphere. Nitrogen oxides come from car exhaust, coal power plants, and factory emissions. When sunlight hits these chemicals, they form airborne particles and ground-level ozone—or smog.

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stealth61 [152]

The number of molecules decreases.

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3 years ago

Assume that the reaction of aqueous hydrobromic acid solution and potassium hydroxide base undergoes a complete neutralization r

Tamiku [17]

Answer:

$HBr + KOH → KBr + H _{2} O$

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3 years ago

A second-order reaction has a rate constant of 1.25 M-1 s-1. If the initial reactant concentration is 1.0 M (a) determine the ha

Ne4ueva [31]

Answer:

(a) 0.8 s

(b) t = 7.2 s

Explanation:

(a) Half life expression for second order kinetic is:

$t_{1/2}=\frac{1}{k[A_o]}$

Where,

$[A_o]$ is the initial concentration = 1.0 M

k is the rate constant = 1.25 M⁻¹s⁻¹

So,

$t_{1/2}=\frac{1}{1.25\times 1.0}$

Half life = 0.8 s

(b) Integrated rate law for second order kinetic is:

$\frac{1}{[A_t]} = \frac{1}{[A]_0}+kt$

Where, $[A_t]$ is the final initial concentration

For 90% completion, 10% is left. so,

$[A_t]=\frac {10}{100}\times 1.0=0.1\ M$

So,

$\frac{1}{0.1} = \frac{1}{1.0}+1.25t$

t = 7.2 s

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3 years ago

Pure water freezes at a. 0 °c. b. 32 °c. c. 100 °c. d. 273 °c.

Solnce55 [7]

0 degrees Celsius, 32 degrees Fahrenheit. So the answer is a

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3 years ago

Read 2 more answers

1. What causes frost to form on the outside of a<br>cold container.

Kamila [148]

Answer:

condensation

Explanation:

Frost forms when an outside surface cools past the dew point. The dew point is the point where the air gets so cold, the water vapor in the atmosphere turns into liquid. This liquid freezes. If it gets cold enough, little bits of ice, or frost, form

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3 years ago

What are the main sources of outdoor air pollution and how do they cause smog?​

What are the main sources of outdoor air pollution and how do they cause smog?