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3 years ago

Why is petrified wood considered a fossil?

Chemistry

1 answer:

Mazyrski [523]3 years ago

8 0

Answer:

Petrified wood contains minerals that are only found in fossils.

Explanation:

learned it in school (promise)

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What is a reliable measurement

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A dependible common measurement

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Which statement is true?

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Answer:

which statement?

Explanation:

nothing is there

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1) How many grams of carbon dioxide are produced at the same time as 360 g of water vapor in the

shutvik [7]

Answer:

3520 g of CO₂

Explanation:

2C₂H₆ + 70₂ → 4CO₂ + 6H₂O

molar ratio of the above reaction is;

2 : 7 → 4 : 6

2 moles of C₂H₆ will form 6 moles of H₂O

Thus, 1 mole of C₂H₆ will form 3 moles of H₂O

mass of H₂O = 360 g

molecular weight of H₂O = 18 g/mol

molar mass = mass ÷ molecular weight = 360÷18 = 20 moles

Total number of moles of H₂O formed = 6 * 20 moles = 120 moles

Number of moles of C₂H₆ reacted = 120 moles ÷ 3 = 40 moles

molar ratio of C₂H₆ to CO₂ = 1 : 2

Thus, number of moles of CO₂ formed = 2 * 40 moles = 80 moles

molecular weight of CO₂ = 44 g/mol

mass of CO₂ formed = number of moles x molecular weight = 80 * 44 = 3520 g

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3 years ago

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Would silver react with dilute sulfuric acid?why or why not?

soldi70 [24.7K]

No, Silver will not react with dilute sulfuric acid.

<u>Explanation:</u>

As Silver has the least reactivity, it is not capable to reduce hydrogen ion from sulfuric acid, even when the acid is in concentrated state. But if the concentrated acids are heated then the Silver may form Ag+ ions.

But silver (Ag) can react with the hot concentrated sulfuric acids ( $H_{2} S O_{4}$ ). As mentioned in below to equation.

$2 A g+2 H_{2} S O_{4} \rightarrow A g_{2} S O+2 H_{2} O$

So if dilute sulfuric acid is used then there will not be any kind of reaction with silver ions.

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What layer in the atmosphere contains the ozone layer

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The <u>Stratosphere</u> contains the Ozone layer in Earth's atmosphere.

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