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Advocard [28]
3 years ago
15

Sort the sentences based on whether they describe the properties of a heterogeneous or a homogenous mixture.

Chemistry
2 answers:
klasskru [66]3 years ago
5 0
Homogeneous Mixture: 
<span>It may be mistaken for a pure substance. 
</span><span>It can be separated using distillation
</span>
Heterogeneous Mixture:
<span>Its components are visible
</span><span>It can be separated using distillation.
Concrete is an example of this kind of mixture.
</span>
Hope this helps!
BlackZzzverrR [31]3 years ago
4 0

Answer:

Homogeneous Mixture:

It may be mistaken for a pure substance.

It can be separated using distillation

Heterogeneous Mixture:

Its components are visible

It can be separated using distillation.

Concrete is an example of this kind of mixture.

Hope this helps!

Explanation:

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Draw the alkene formed when 1-heptyne is treated with hbr in the presence of peroxide.
Nimfa-mama [501]
<h2>Heptene formed is -</h2><h2>CH_3-CH_2-CH_2-CH_2-CH_2-CH=CHBr</h2>

Explanation:

The two possibilities when the peroxide is not present

  • CH_{3}-CH_{2}-CH_{2}-CH_{2}-CH_{2}-C≡CH +HBr → CH_3-CH_2-CH_2-CH_2-CH_2-CBr=CH_{2}

  • CH_3-CH_2-CH_2-CH_2-CH_2-CBr=CH_2 + HBr →CH_3-CH_2-CH_2-CH_2-CH_2-CBr_2-CH_3

In presence peroxide,

CH_3-CH_2-CH_2-CH_2-CH_2-C≡CH+ HBr →CH_3-CH_2-CH_2-CH_2-CH_2-CH=CHBr

  • When peroxides are present in the reaction mixture, hydrogen bromide adds to the triple bond of heptane with regioselectivity.
  • This reaction is opposite to that of Markovnikov's rule which says that when asymmetrical alkene reacts with a protic acid HX, then the hydrogen of an acid is attached to the carbon with more in number of hydrogen substituents, and the halide (X) group is attached to the carbon with more in number of substituents of alkyl.
  • One mole of HBr adds to one mole of 1-heptane.
  • The structure of heptene formed is -

CH_3-CH_2-CH_2-CH_2-CH_2-CH=CHBr

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How long will it take a plane to go 800 miles if it’s traveling at an average speed of 650 miles per hour?
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If there is NO wind resistance, just plain math, this is the answer.

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