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notsponge [240]
3 years ago
12

Dominic made the table below to organize his notes about mixtures,

Chemistry
1 answer:
Troyanec [42]3 years ago
6 0

Answer: Although it is possible to have more than one state, it is also possible to have only one state.

Explanation: Just took the test

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c) A substance has a high melting point and conducts electricity. What type of structure does it have
trapecia [35]

Answer:

Metallic structure

Explanation:

They have a high melting point due to the strong forces of attraction between the positive ions (cations) and the delocalised electrons. Moreover, they conduct electricity due to the sea of delocalised electrons.

<em>[Extra: It could be an ionic compound since they also have a high melting point, however they only conduct electricity in liquid or aqeouus state.]</em>

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2 years ago
While does kerosene float on water​
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8 0
3 years ago
An unknown compound displays singlets at δ 2.1 ppm and 2.56 ppm in the ratio of 3:2. what is the structure of the compound?
olasank [31]

1) As can be seen from any 1H NMR chemical shift ppm tables, hydrogens which have δ values from 2ppm to 2.3ppm are hydrogens from carbon which is bonded to a carbonyl group. From this, we can conclude that our hydrogens belong to the type, but from 2 different alkyl groups because of 2 different signals.

 

2) So, one alkyl group is CH3 and second one can be CH or CH2.

 

3) If we know that ratio between two types of hydrogens is 3:2, it can be concluded that second alkyl group is CH2. 


4) Finally, we don't have any other signals and it indicates that part of the compound which continues on CH2 is exactly the same as the first part.

The ratio remains the same, 3:2 ie 6:4

7 0
3 years ago
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dimulka [17.4K]

Answer:

<h3>it is important to carefully examine chemical reactions because there are many ways substances can be <em><u>reacting</u></em> without a chemical reaction taking place.</h3>

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2 years ago
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Explanation:

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