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vitfil [10]
4 years ago
14

Why is it possible to use physical properties to separate a mixture

Chemistry
1 answer:
pishuonlain [190]4 years ago
7 0
Using salt, water, and oil, by adding the salt you have <span>eliminated the oil. then by boiling it the water evaporates, you take a funnel, </span>gather the water vapor, put it in a cup. and everything is separated! so it does <span>work.
 It is possible to separate a mixture because they are in pieces that are able for you to take away from the whole mixture. As for homogeneous mixtures, they can not separate. For example, kool-aid is a mixture you can not separate, mixing water and powder is impossible to separate when together.
</span><span>
</span>
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Consider the following molecules and the description of the bonding present in each: CH3CH2CH2CH3CH3CH2CH2CH3 (C−CC−C and C−HC−H
denis23 [38]

CH3CH2CH2CH3 < CH3CH2CHO < CH3CHOHCH3

Explanation:

Boiling point trend of Butane, Propan-1-ol and Propanal.

Butane is a member of the CnH2n+2 homologous series is an alkane. Alkanes have C-H and C-C bonds which have Van der waals dispersion forces which are temporary dipole-dipole forces (forces caused by the electron movement in a corner of the atom). This bond is weak but increases as the carbon chain/molecule increases.

In Propan-1-ol(Primaryalcohol), there is a hydrogen bond present in the -OH group. Hydrogen bond is caused by the attraction of hydrogen to a highly electronegative element like Cl-, O- etc. This bond is stronger than dispersion forces because of the relative energy required to break the hydrogen bond. Alcohols (CnH2n+1OH) also experience van der waals dispersion forces on its C-C chain and C-H so as the Carbon chain increases the boiling point increases in the homologous series.

Propanal which is an Aldehyde (Alkanal) with the general formula CnH2n+1CHO. This molecule has a C-O, C-C and C-H bonds only. If you notice, the Oxygen is not bonded to the Hydrogen so there is no hydrogen bond but the C-O bond has a permanent dipole-dipole force caused by the electronegativity of oxygen which is bonded to carbon. It also has van der waals dispersion forces caused by the C-C and C-H as the carbon chain increases down the homologous series. The permanent dipole-dipole forces are not as easy to break as van der waals forces.

In conclusion, the hydrogen bonds present in alcohols are stronger than the permanent dipole-dipole bonds in the aldehyde and the van der waals forces in alkanes (irrespective of the carbon chain in Butane). So Butane < Propanal < Propan-1-ol

3 0
3 years ago
Name the following alkane molecule:
DanielleElmas [232]

Answer:

It's the A. 2-bromobutane

Explanation:

Have a good day

8 0
3 years ago
What are the four bases found in DNA molecule???? Please send helppppp​
alukav5142 [94]

Answer:

DNA consists of molecules called nucleotides. Each nucleotide comprises a group of phosphates, a group of sugars and a base of nitrogen. The four forms of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The sequence of these bases defines the DNA instructions or genetic code.

4 0
3 years ago
Select the phrase that completes each statement.
Karolina [17]

Answer:

Honey is A MIXTURE AND A SOLUTION

Grape juice is A MIXTURE AND A SOLUTION

Sand on the beach is A MIXTURE BUT NOT A SOLUTION

A mixture of carbon dioxide and nitrogen gases is A MIXTURE AND A SOLUTION

Rubbing Alcohol is A MIXTURE AND A SOLUTION

Explanation:

For edg 2020

3 0
4 years ago
Express each of the following answers in the IUPAC format. Do not include any capitals or spaces in your name. Separate multiple
lorasvet [3.4K]

The full question is shown in the image attached

Answer:

See explanation

Explanation:

In naming an alkane, the first thing we do is to obtain the parent chain by counting the number of carbon atoms in the chain.

When we obtain that, then we identify the substituents and number them in such a way that they have the lowest numbers. The compounds shown have the following names according to the order in which the structures appear in the image attached;

1. 2-methyl propane

2. 2,4-dimethyl heptane

3. 2,2,3,3-tetramethyl butane

4. 5-ethyl-2,4-dimethyl octane

5 0
3 years ago
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