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Naya [18.7K]
3 years ago
15

What does the monomer unit of Polyester look like? And what’s its chemical formula?

Chemistry
1 answer:
AlladinOne [14]3 years ago
6 0

Answer:

             The monomers of polyesters are,

                                  (i) A Dicarboxylic Acid

                                  (ii) A Dialcohol

Explanation:

                     As depicted from name polyester is a macromolecule which contains numerous ester functional groups. Ester is formed by the condensation of Carboxylic acid and alcohol as shown,

                            R-COOH  +  R'OH  →  RCOOR'  +  H₂O

Therefore, in order to utilize this reaction for the formation of long chain of polyesters then one can use a dicarboxylic compounds and dialcohol compounds. This will allow to propagate the chain length depending upon the requirement. Hence, the general reaction for the formation of polyester is shown below. The circle and rectangle specifies different moieties which imparts different characters to the polyester.

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What type of elements make up an ionic compound
xenn [34]

Answer:

Those that “prefer” A charge; the Halogens and Chalcogens are good examples - Halogen MEANS salt forming, and even organic compounds can form salts; look up “tropylium ion”.

Explanation:

5 0
2 years ago
Shifts in the rock layer locations cannot account for gaps in the rock record<br><br> true or false
vivado [14]

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Explanation:

Have a good day

I hope this helps if not sorry :(

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4 0
3 years ago
A sample of helium has a volume of 50.00 L at STP. How many helium atoms are in the sample? Show work
Setler79 [48]

Answer:

Explanation:

molar volume at STP=22.4 L

given volume=50.0 L

number of moles=given volume/molar volume

number of moles=50.0/22.4

number of moles=2.2

1 mole of helium =6.023*10^23 atoms

2.2 moles of helium =6.023*10^23*2.2=1.3*10^24

therefore 50.0 L of helium contain 1.33*10^24 atoms

4 0
2 years ago
How many molecules of oxygen are needed to make 3.5 oxygens of water?​
max2010maxim [7]

Answer:

57.6g

Explanation:

So, if in one mole of water, 16 g of oxygen atom is present. Then, in 3.6 moles of water, the mass of oxygen present will be 3.6×16=57.6g. Therefore, the amount of oxygen present in 3.6 g water is option (B)- 57.6 g.

8 0
2 years ago
a scientists finds an organism that cannot move. it has many cells, produces spores, and gets food from its environment. in whic
lord [1]

The correct answer is : The Organism belongs in Kingdom Fungi


The explanation:


1) because Fungi can be multicellular


2) most of them cannot move.


3) They can get food by releasing digestive juices into their environment.

3 0
3 years ago
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