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Mandarinka [93]
3 years ago
7

Why is petrified wood considered a fossil?

Chemistry
2 answers:
earnstyle [38]3 years ago
5 0

Answer:

Petrified wood was part of a plant that has been changed into rocks.

Explanation:

Yeet

Novosadov [1.4K]3 years ago
3 0

Answer:

it can be changed into rocks

Explanation:

im 100% sure

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Fertilizer is sold in 100 pound bags labelled with the amount of nitrogen ( N), phosphoric acid ( P2O5), and potash ( K2O) prese
Mama L [17]

Answer:

You need to add 3 100 pound bags of  Parkerâs Premium Starter and 5 100 pound bags of Vigoro Ultra Turf fertilizer

Explanation:

You can obtain 3 equations. One for each compound:

For N:

177 pounds = 29x + 18y <em>(1) </em>

<em>-</em><em>Where x are bags of Vigoro Ultra Turf fertilizer</em><em> </em><em>and y are bags of  </em>Parkerâs Premium Starte-

For P₂O₅:

134 pounds = 3x + 25y <em>(2)</em>

For K₂O:

42 pounds = 4x + 6y <em>(3)</em>

Replacing (1) in (2):

134 = (531/29 - 54y/29) + 25y

3355/29 = 671y/29

<em>y = 5 bags</em>

Thus,

<em>x = 3 bags</em>

You can replace in each equation to prove that this is the right result.

I hope it helps!

<em></em>

3 0
3 years ago
The mass percent of hydrogen in hydrogen peroxide, h2o2, is
miss Akunina [59]
The atomic weight of H is 1, O is 16.
There are two of each in a hydrogen peroxide molecule.
(1*2)+(16*2)=2+32
2+32=34
The weight of the whole molecule is 34, and hydrogen makes up 2 of that.
(2/34)*100=0.0588235294*100
0.0588235294*100=5.88235294

The percentage mass of hydrogen in a hydrogen peroxide molecule is 5.88%
3 0
2 years ago
Read 2 more answers
Plz help me woth these 2 questions they r killing me!!!!!
Bogdan [553]
If you leave the plant in the closet it will die due to the lack of sunlight and water it needs.

Yes, you could begin to swear because you are used to hearing those words so in your mind it will get implanted and it will be just a natural response.

Happy studying ^_^
3 0
3 years ago
Why would you need a locating agent in an experiment to separate amino acids by chromatography
Nadusha1986 [10]

A locating agent is needed in an experiment to separate amino acids by chromatography as it helps to analyze colorless substances on paper.

<h3>What is chromatography?</h3>

Chromatography is an analytical method frequently used to separate a chemical mixture into its components, allowing for in-depth analysis of each component.

There are many different types of chromatography including liquid, gas, ion-exchange, and affinity chromatography, but they all use the same basic principle.

<h3>What is the use of a locating agent in Chromatography?</h3>

In paper chromatography, colorless compounds are examined using a locating agent.

It is a chemical that combines with colorless substances to produce colorful compounds that are easy to see for analysis. Ninhydrin spray is an example of a locating agent of this type.

Thus, a locating agent is used in an experiment to separate amino acids by chromatography as it helps in determining colorless substances on paper.

Learn more about chromatography:

brainly.com/question/11960023

#SPJ9

5 0
1 year ago
How many grams of KCIO3 will be formed from 3.58g of KCI
blsea [12.9K]

Answer:

5 mols

Explanation:

7 0
3 years ago
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