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tino4ka555 [31]
3 years ago
6

Bromine is one of only two elements that is a liquid at room temperature. Bromine has a heat of vaporization of 30.91 kJ/mol and

its boiling point is 59 °C. What is the entropy of vaporization for bromine?
A. -301 J/(mol∙K)
B. -93.1 J/(mol∙K)
C. 10.7 J/(mol∙K)
D. 93.1 J/(mol∙K)

Chemistry
2 answers:
Wewaii [24]3 years ago
7 0

Answer:

Mercury and bromine are two elements which exists as liquid at room temperature. What does this tell you about their melting and boiling points?

oksian1 [2.3K]3 years ago
4 0

Answer:

I hope this helps

Explanation:

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3 years ago
How would you write and name the ions for tin?
Yakvenalex [24]
For Single Element Ions (e.g. K+ , Mg2+, P3-) To name positive (+) ions write the name as from the Periodic Table and add the word 'ion' afterwards. To name negative (-) ions write the name from the Periodic Table but replace the ending with 'ide'. Put the word 'ion' after the name.
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PilotLPTM [1.2K]

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Which experimental feature of the MALDI-MS technique allows the separation of ions formed after the adduction of tissue molecule
34kurt

Answer:

The experimental feature of the MALDI-MS technique which allows the separation of ions formed after the adduction of tissue molecules:

B) Velocity of ions depends on the ion mass-to-charge ratio.

Explanation:

  • The option a is not correct as distance traveled by ions doesn't depend upon the ion charge rather it depends upon time for which you leave the sample to run.
  • The  option b is correct as velocity of ions depends on the ion mass-to-charge ratio because separation is done due to mass to charge ratio feature.
  • The option c is incorrect as time of travel is not inversely proportional to the ion-to-mass ratio because the ion will move across the gel until you stop the electric field.
  • The option d is not correct as electric field between MALDI plate and MS analyzer is though uniform but this feature doesn't allow the separation of ions.

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Why does oxygen have a melting point
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Answer:

The intermolecular forces between water molecules are stronger than those between oxygen molecules. In general, the bigger the molecule, the stronger the intermolecular forces, so the higher the melting and boiling points.

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3 years ago
Read 2 more answers
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