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Artist 52 [7]
3 years ago
9

Which natural polymer makes up paper? A. starch B. nylon C. wool D. rubber

Chemistry
1 answer:
eduard3 years ago
7 0

Answer:

starch

Explanation:

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A. How many moles of H2 are produced from two<br> moles of CH4 ?
Nina [5.8K]
Every mole of CH4 used, three moles of H2 are produced, so 2 moles of CH4, would be 6 moles of H2 produced
8 0
2 years ago
A compound with molecular formula C6H15N exhibits a singlet at d 0.9 ppm (1H), a triplet at 1.10 ppm (3H), a singlet at 1.15 ppm
Triss [41]

Answer:

CH3 - CH2 - NH - C(CH3)3

Explanation:

The 1HNMR is the acronym for Proton nuclear magnetic resonance and it is used in chemistry or Chemical laboratory for the analysis and identification of compounds.

In order to be able to answer the question accurately you have to have the tables containing all the values for chemical shift. The Chemical shift is measured in ppm and it occur due to Resonance frequency variation.

From the table, a singlet at 1.15 ppm (9H) is - C(CH3)3.

A singlet at d 0.9 ppm (1H) shows the presence of a secondary amine group, that is -R2NH group.

A triplet at 1.10 ppm (3H) shows that we have;

CH3- CH2-

A quartet at 2.6 ppm (2H) shows that we have;

-CH2 - CH3.

Therefore, joining all together we have;

CH3 - CH2 - NH - C(CH3)3.

Kindly check attached file for the picture of the structure.

5 0
3 years ago
What is 3O2 in science
andrew11 [14]

Answer:

carbon Suboxide

Explanation:

7 0
3 years ago
6) How many valence electrons does an atom of Cu possess?
agasfer [191]
The answer is c)11 because copper has 11 valence electrons
7 0
3 years ago
On the periodic table how many periods are there and how many columns are there
mestny [16]
There are seven periods with eighteen columns in the periodic table.
8 0
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