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Nataly_w [17]
3 years ago
6

Care sunt factorii de poluare a aerului?

Chemistry
1 answer:
bulgar [2K]3 years ago
8 0

Answer:

Arderea de combustibili fosili, activități agricole, eșapament din fabrici și industrii, operațiuni miniere și poluarea aerului interior

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What is the neutral atom that has its first two energy levels filled, has 8 electrons in its third energy level, and has no othe
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Argon

Ar 1s²2s²2p⁶3s²3p⁶
8 0
3 years ago
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Calculate the number of moles of excess reactant that will be left-over when 50.0 g of KI react with 50.0 g of Br2: 2KI + Br2 2K
Ugo [173]
Hope this helps you.

4 0
3 years ago
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Annual precipitation rates can be collected for several years, added together, and divided by the number of years to obtain an a
Art [367]

The average annual precipitation has been calculated by dividing the sum of average rainfall to the number of years. Thus, the given statement is true.

Precipitation has been given as the amount of water in the atmosphere that has been to fall off on the earth.

<h3 /><h3>Average Annual Precipitation</h3>

The average has been defined as the mid-value for the number readings. The average precipitation has been the approximate fall of water on the earth in the specified period.

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brainly.com/question/5019199

6 0
2 years ago
Element fact sheet <br> Help!!!!
Alex17521 [72]
Element name: Neon
element symbol: Ne
atomic number: 10
atomic mass: 20.1797
number of protons: 10
number of neutrons: 10
number of electrons: 2,8
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7 0
3 years ago
Ammonium perchlorate nh4clo4 is a powerful solid rocket fuel, used in the space shuttle boosters. it decomposes into nitrogen n2
Alchen [17]

Answer:

Explanation:

2 NH₄ClO₄ ⇒ N₂ + Cl₂ + 2O₂ + 4 H₂O

2 moles          1 mole

We are required to produce 1.4 moles of N₂ from ammonium perchlorate .  

1 mole of N₂ is produced by 2 moles of ammonium perchlorate

1.4 moles of N₂ will be produced by 2 x 1.4 = 2.8 moles of ammonium perchlorate .

Answer is 2.8 moles .

4 0
3 years ago
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