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blondinia [14]
3 years ago
7

How does carbon enter soil?

Chemistry
2 answers:
Umnica [9.8K]3 years ago
6 0
Animals and plants get rid of carbon<span> dioxide gas through a process called respiration. </span>Carbon<span> moves from fossil fuels to the atmosphere when fuels are burned. When humans burn fossil fuels to power factories, power plants, cars and trucks, most of the </span>carbon<span> quickly </span>enters<span> the atmosphere as </span>carbon<span> dioxide gas. I hope this works!

</span>
svet-max [94.6K]3 years ago
5 0
When something carbon based is in the soil. For example when you bury a cat or a body, it slowly decomposes, that carbon that was in the body gets absorbed by the soil. It goes back to the earth. That soil with "new" carbon is soil rich in nutrients etc. hope this helps
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What is the final temperature of a mass of 100 g of water at 80°C that is added to 200 g of water at 50°C?
Makovka662 [10]
Hold on give me a moment to answer this for you.
5 0
3 years ago
In general, atomic radii:
Artist 52 [7]

<u>Answer:</u> The correct answer is Option E.

<u>Explanation:</u>

Atomic radius is defined as the total distance measured from the nucleus of an atom to the outermost shell.

<u>Trend down the group:</u>

Moving from top to bottom, a new shell gets add up around the nucleus and the outermost shell gets far away from the nucleus. Due to this, the distance between the nucleus and outermost shell increases, which results in the increase of atomic radii of the atom.

<u>Trend across the period:</u>

Moving from left to right in a period, more and more electrons gets add up in the same shell. The attraction between the last electron and the nucleus increases. This results in the shrinkage of size of an atom. Thus, decreasing the atomic radii of the atom.

Hence, the correct answer is Option E.

5 0
3 years ago
Which of the following measurements is expressed to three significant figures?
Norma-Jean [14]

Answer:

D

Explanation:

it goes past the decimal three places

6 0
3 years ago
Read 2 more answers
A balloon contains helium gas expands from 230ml to 860 ml as more helium is added. What was the initial quantity of helium pres
Kisachek [45]

Answer:

n₁ = 1.0× 10⁻⁴ mol

Explanation:

Given data:

Initial volume of balloon = 230 mL

Initial number of moles of He =?

Final number of moles of He = 3.8 × 10⁻⁴ mol

Final volume of balloon = 860 mL

Solution:

The given problem will be solve through Avogadro law,

"Number of moles of gas and volume are directly proportional to each other at constant temperature and constant pressure"

Mathematical relationship:

V₁/n₁ = V₂/n₂

No we will put the values.

230 mL  /n₁   = 860 mL/ 3.8 × 10⁻⁴ mol

n₁ = 230 mL× 3.8 × 10⁻⁴ mol/ 860 mL

n₁ = 874 × 10⁻⁴ mol. mL / 860 mL

n₁ = 1.0× 10⁻⁴ mol

6 0
3 years ago
Read 2 more answers
Calculate the specific heat of a piece of wood if 2000 g of wood absorbs 75,250 J of heat, and its temperature changes from 30°C
inna [77]

Answer:

C

Explanation:

<em>The </em><em>specific</em><em> </em><em>heat </em><em>capacity</em><em>=</em><em>quantity</em><em> of</em><em> </em><em>heat</em><em> </em><em>in </em><em>joule/</em><em>mass×</em><em>c</em><em>h</em><em>a</em><em>n</em><em>g</em><em>e</em><em> </em><em>in </em><em>temperature</em>

<em>from </em><em>this </em><em>question</em><em> </em><em>the </em><em>quantity</em><em> of</em><em> </em><em>heat</em><em> </em><em>is </em><em>7</em><em>5</em><em>2</em><em>5</em><em>0</em><em>,</em><em>the </em><em>mass </em><em>is </em><em>2</em><em>0</em><em>0</em><em>0</em><em> </em><em>and </em><em>the </em><em>change </em><em>in </em><em>temperature</em><em> </em><em>is </em><em>5</em><em>0</em><em>-</em><em>3</em><em>0</em>

<em>which </em><em>is </em><em>2</em><em>0</em>

<em>therefore</em>

<em>c=</em><em>7</em><em>5</em><em>2</em><em>5</em><em>0</em><em>/</em><em>2</em><em>0</em><em>0</em><em>0</em><em>×</em><em>2</em><em>0</em>

<em>c=</em><em>7</em><em>5</em><em>2</em><em>5</em><em>0</em><em>/</em><em>4</em><em>0</em><em>0</em><em>0</em><em>0</em>

<em>c=</em><em>1</em><em>.</em><em>8</em><em>8</em>

<em>I </em><em>hope </em><em>this </em><em>helps</em>

3 0
3 years ago
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