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Artist 52 [7]
4 years ago
14

Formaldehyde, ch2o, is used as an embalming agent. draw the structure of ch2o including lone pairs.formaldehyde, ch2o, is used a

s an embalming agent. draw the structure of ch2o including lone pairs.formaldehyde, ch2o, is used as an embalming agent. draw the structure of ch2o including lone pairs.
Chemistry
1 answer:
Llana [10]4 years ago
8 0
<span>Aldehydes and ketones have the C=O grop in their structure Formaldehyde : ......O ......ll ......C ..../....\ ..H....H</span>
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Which is the most prevalent species in a 0.25 m aqueous solution of phosphoric acid h3po4 g?
kap26 [50]

Answer is: H₃PO₄.

A phosphoric acid is three protic acid, which means that in water release tree protons. Phosphoric acid ionizes in three steps in water.

<span> First step: H</span>₃PO₄(aq) ⇄ H₂PO₄⁻(aq) + H⁺(aq).<span>
Second step: H</span>₂PO₄⁻(aq)⇄ HPO₄²⁻(aq) + H⁺(aq).<span>
Third step: HPO</span>₄²⁻(aq) ⇄ PO₄³⁻(aq) + H⁺(aq).<span>
Species that are present: H</span>₃PO₄, H₂PO₄⁻, HPO₄²⁻, PO₄³⁻ and H⁺, but because the acid dissociation constants are low, very low percentage of acid dissociates.

8 0
3 years ago
If high temperatures are most effective at killing microbes, what statement correctly explains why some food products are treate
ZanzabumX [31]

Answer: A

Explanation:

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6 0
2 years ago
Which equation represents a change that results in an increase in disorder?(1 ) I2(s)=&gt;I2(g)
ankoles [38]

Answer : The correct option is, (1) I_2(s)\rightarrow I_2(g)

Explanation :

Entropy : It measures the disorderedness or randomness of the molecule.

That means higher the disorderedness, higher will be the entropy.

As we are going from solid state to liquid state, liquid state to gaseous state, the disorderedness increases due to the less inter-molecular interaction between the molecules.

And, as we are going from gaseous state to liquid state, liquid state to solid state, the disorderedness decreases due to the more inter-molecular interaction between the molecules.

(1) I_2(s)\rightarrow I_2(g)

In this reaction, the disorderedness increases because the state changes from solid to liquid.

(2) CO_2(g)\rightarrow CO_2(s)

In this reaction, the disorderedness decreases because the state changes from gaseous to solid.

(3) 2Na(s)+Cl_2(g)\rightarrow 2NaCl(s)

In this reaction, the disorderedness decreases because the state changes from gaseous to solid.

(4) 2H_2(g)+O_2(g)\rightarrow 2H_2O(l)

In this reaction, the disorderedness decreases because the state changes from gaseous to liquid.

Hence, the correct option is, (1) I_2(s)\rightarrow I_2(g)

8 0
3 years ago
Read 2 more answers
How the fossil evidence helped you put the landmasses together (what was your process)
Otrada [13]

Explanation:

The idea behind using fossils to correlate two land masses was first put into limelight by a British geologist, Williams Smith.

According to the principle of fossil and fauna succession "fossils and fauna succeed one another in a define order".

This implies organisms evolve in predictable manner.

Since we know that certain types of organisms live within a period in time on the earth surface, we expect that such organisms would be fossilized in the geologic record and preserved.

  • Identify the fossil record in one part of the land mass. Log the rock types with the corresponding fossils in them.
  • On the other side, repeat the same process.
  • Look for unconformity surfaces where some part of the stratigraphic records might have been lost.
  • If the fossil records on one side corresponds with that on the other other side, it suggests that the land masses must have once been joined together.
  • The logic is that when the organism were on the same land mass, they thrived and lived together.
  • They became fossilized together till the lands separated.

learn more:

fossils brainly.com/question/9415077

#learnwithBrainly

4 0
3 years ago
SO2(g)+NaOH(s)=Na2SO3(s)+H2O
Lisa [10]

Explanation:

<em><u>SO2 + 2NaOH → Na2SO3 + H2O</u></em>

<em><u>...</u></em>

6 0
4 years ago
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