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ra1l [238]
3 years ago
13

Calcium carbonate is a type of hydrogenous sediment that can be buried and hardened into _____.

Chemistry
2 answers:
Lisa [10]3 years ago
6 0

A: limstone is the correct answer

enot [183]3 years ago
5 0
<span>The answer is Limestone. This is a sedimentary rock, comprise mostly of skeletal remains of marine creatures for instance coral, forams and mollusks. Its main resources are the reserves calcite and aragonite, which are diverse crystal types of calcium carbonate (CaCO3)</span>
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A chemist measures the energy change ΔH during the following reaction: C3H8 (g) +5O2 (g) →3CO2 (g) +4H2O (l) =ΔH−2220.kJ Use the
statuscvo [17]

Answer:

The reaction is exothermic.

Yes, released.

The heat released is 4,08x10³ kJ.

Explanation:

For the reaction:

C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(l)

The ΔH is -2220 kJ, As ΔH is <0, <em>The reaction is exothermic.</em>

As the reaction is exothermic, the heat of the reaction will be <em>released.</em>

The heat released in 81,0g is:

81,0g C₃H₈×\frac{1mol}{44,1g}×\frac{2220kJ}{1mol}= <em>4,08x10³ kJ</em>

<em>-Using molar mass of C₃H₈ to convert mass to moles and knowing that there are released 2220 kJ per mole of C₃H₈-</em>

I hope it helps!

3 0
3 years ago
2.what is the purpose of the sodium sulfate? (1 pt) why did you rinse the sodium sulfate with an additional portion of methylene
suter [353]

To ensure that the 9-Fluorenone was totally dry, it had to be washed with methylene chloride. To make sure that methylene chloride is present in a pure solution, sodium sulfate binds to water and precipitates.

<h3>What is the purpose of the sodium sulfate?</h3>
  • Although it has numerous additional uses, sodium sulfate is primarily employed in the production of detergents and in the Kraft process of paper pulping.
  • The decahydrate's natural mineral form, mirabilite, accounts for about half of the world's output, with the other half coming from chemical byproducts. Sodium sulfate was used as a drying, isolating, and anhydrous salt for the 9-fluorenone.
  • To make sure that methylene chloride is present in a pure solution, sodium sulfate binds to water and precipitates.
  • The sodium salt of sulfuric acid is known as sodium sulfate. Na2SO4 is the chemical formula for sodium sulfate. The mineral thenardite, which is also known as anhydrous sulfate, is described as a white, crystalline solid, whereas the decahydrate Na2SO4. 10H2O is also known as Glauber's salt or the mirabilis salt.

To know more about sodium sulfate, refer:

brainly.com/question/23509646

#SPJ4

4 0
1 year ago
Which reaction removes hydrogen ions from the blood?
Mrrafil [7]
Pulmonary ventilation, and carbonic acid-bicarbonate buffering system
3 0
3 years ago
HURRY IT'S URGENT!!!
Nady [450]

Answer:

convection

Explanation:

as air is heated, it rises up and away from the heat source, cools then falls closer to the heat source over and over again.

6 0
2 years ago
What is the percent nitrogen in NaNO3?<br> 56.47%<br> 27.04%<br> 16.48%<br> 14.01%
hichkok12 [17]
I think it’s :answer choice c
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2 years ago
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