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Vlada [557]
3 years ago
8

What is the key element fountain all carbohydrates lipids proteins and nucleus acid

Chemistry
1 answer:
just olya [345]3 years ago
6 0
Carbon is found in all four.
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a mole have have wrong becouse i understand

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What is the mass number of 207Pb ? A: 289 B: 207 C: 125 D: 82
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207 is the mass number. 82 would be the atomic number
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Elements bond when they share or transfer their outer shell electrons which are called valence electrons
rusak2 [61]

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True

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What is the mass spectrom​
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Here's your Answer

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the mass spectrum is the graphical representation of the ion abundance versus the mass to charge of the ions separated in mass spectrometer

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3 years ago
Classify each of the four compounds as a conjugated, isolated, or cumulated diene. Compound A: Two alkenes are joined by a sigma
Lina20 [59]

Explanation:

Conjugated diene is the one that contains alternate double bonds in its structure. That means both the double bonds are separated by a single bond.

Cumulated diene is the one that contains two double bonds on a single atom. This means it has two double bonds continuously.

Isolated double-bonded compound has a single bond isolated by two to three single bonds.

Compound A: Two alkenes are joined by a sigma bond.

For example:

-CH_2=CH-CH=CH2-

It is a conjugated diene.

Compound B: Two alkenes are joined by a C H 2 group.

It is a cumulative diene.

Compound C: Two alkenes are joined by C H 2 C H 2.

Then it is an isolated alkene.

Compound D:  A cyclohexene has a double bond between carbons 1 and 2. Carbon 3 is an sp 2 carbon that is bonded to another s p 2 carbon with an alkyl substituent.

Hence, compound D is a conjugated diene.

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