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3 years ago

What are the consequences of increased nitrogen deposition over terrestrial or aquatic ecosystems?

Chemistry

1 answer:

noname [10]3 years ago

8 0

Answer:

Nitrogen is one of the major abundant gas in the atmosphere occupying 78% by volume.

It plays an important role in controlling the aquatic and terrestrial ecosystem. The presence of high amount of nitrogen in the atmosphere can lead to the release of large amount of pollutants that includes ammonia and ozone, which can cause difficulty in breathing, visibility problems and at the same time, it will also the affect the growth and expansion of plants. It also can damages to the forests, soils, and water.

The presence of extremely large amount of nitrogen gas in the aquatic ecosystem can also influence the growth of aquatic plants and algae. When these organisms are present in a large number then it blocks the water in-taking path of these plants. It eventually consumes the dissolved oxygen as soon as they decompose, as a result of which it does not allow the light to penetrate into the deeper water (zones).

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When 20 ml of 0.1 M HCl is mixed with 20

Bas_tet [7]

Answer:

it is b i took the test

Explanation:

4 0

2 years ago

The autoignition of both ethanol and octane occurs at 363 oC. Which gas sample contains the gas molecules that have a greater av

USPshnik [31]

Answer:

See explanation

Explanation:

At the same temperature, the average kinetic energy of gases depends on the molecular mass of the gas. Hence, given a particular temperature, lighter molecules travel faster on the average than heavier molecules.

Considering ethanol and octane, The molar mass of ethanol is 46.07 g/mol while the molar mass of octane is 114.23 g/mol. Hence, ethanol has a greater average kinetic energy than octane at the same temperature.

7 0

3 years ago

A compound has the formula X2O3 where x is an unknown element. If the compound is 24.26% oxygen, what element does x represent?

Vinil7 [7]

<h3>Answer:</h3>

Element X is Arsenic (Ar)

<h3>Explanation:</h3>

We are given the compound X₂O₃

The compound is 24.26% Oxygen

We are required to identify element X

<h3>Step 1: Determine the mass of Oxygen in the compound </h3>

Atomic mass of Oxygen is 16.0 g

There are three oxygen atoms in the compound

Therefore;

Mass of oxygen in the compound = 3 × 16

= 48 g

<h3>Step 2: Total mass of the compound </h3>

Total percentage = 100%

But, Oxygen in the compound is 24.26 % and has a mass of 48 g

Therefore;

Mass of the compound = (48 g ÷ 24.26 ) × 100

= 197.857 g

<h3>Step 3 mass of X in the compound </h3>

Since we know the mass of oxygen in the compound and the mass of the compound we can determine the mass of X

Mass of X in the compound = Mass of the compound - Mass of Oxygen in the compound

= 197.857 g - 48 g

= 149.857 g

But there are two atoms of X in the compound.

Therefore, molar mass of X = 149.857 g ÷ 2

= 74.929 g

<h3>Step 4: Identity of element X</h3>

We then we need to identify the element with a molar mass of 74.929 g

Therefore, the element represented above is Arsenic which has an atomic mass of 74.92.

Thus, our compound is Ar₂O₃

5 0

3 years ago

PLEASE HELP!!!!! I'LL YOU BRAINIEST!!!!

Sidana [21]

Answer:

I believe 11 is B 12 is C 13 is B and 14 is C

3 0

3 years ago

You are working in your laboratory and decide to do some cleaning. You find a test tube with some brown substance congealed at t

Anna [14]

Answer:

<em>The mystery substance is</em> <u>C. Bromine (Br) </u>

Explanation:

<em>Argon (Ar) </em>is a noble gas. Whose freezing point is -189 °C (very low), thus it cannot be the frozen substance. Also, it is not reactive, thus is would have not reacted with iron. Hence, argon is not the mystery substance.

<em>Scandium (Sc) </em>is a metal from group 3 of the periodic table, thus is will not react with iron. Thus, scandium is not the mystery substance.

Both <em>bromine</em> and <em>iodine</em> are halogens (group 17 of the periodic table).

The freezing point of bromine is −7.2 °C, and the freezing point of iodine is 113.7 °C. Thus, both could be solids (frozen) in the lab.

The reactivity of the halogens decrease from top to bottom inside the group. Bromine is above iodine. Then bromine is more reactive than iodine.

Bromine is reactive enough to react with iron. Iodine is not reactive enough to react with iron.

You can find in the internet that bromine vapour over hot iron reacts producing iron(III) bromide. Also, that bromine vapors are red-brown.

Therefore, <em>the mystery substance is bromine (Br).</em>

7 0

4 years ago