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Vlad1618 [11]
3 years ago
10

What group of plants was found in the mesozoic but not in the paleozoic?

Chemistry
1 answer:
const2013 [10]3 years ago
8 0
Angiosperms didn't exist until the late Mesozoic era..
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Can someone please help????nThis is sooooo hard
Rashid [163]

Answer:

See explanation.

Explanation:

I highly suggest you watch OChem Tutor's videos on IUPAC nomenclature because the actual naming would take a lot of time to teach in text-based format. But here is how to name them:

1) I think there are two seperate pictures for number 1. The molecule on the left is 1-pentene and the one on the right is 4-methyl-1-pentene. If the whole thing is one molecule but there is just a bond missing where the red marker numbers are, that molecule would be 9-methyl-1,6-decadiene.

2) 4-methyl-2-pentene

3) 2,4-octadiene

4) 1,5-nonadiene

5) 2,5-dimethyl-3-hexene

6) 3,6-dimethyl-2,4-heptadiene

7) 2,5,5-trimethyl-2-hexene

6 0
2 years ago
What is the molarity of a solution containing 7.0 moles of solute in 569 mL of solution??
enot [183]
First, we want to convert 569 mL to L:

569 mL (L/1000 mL) =.569 L

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8 0
3 years ago
What is the element CH3CH2CH2CH2CH2OH?
dimaraw [331]
<span>Pentan-1-ol. 'Pentan' because it has a chain of 5 carbons. 'ol' because it has an alcohol group at the end (-OH), and the 1 represents the position of the alcohol group on the cardon chain. Though it is not an element. It is a compound which contains the elements Carbon, Hydrogen and Oxygen.

</span>
7 0
4 years ago
A particle that orbits the nucleus in an atom is called a(n
Morgarella [4.7K]
Particles that orbit the nucleus are called electrons.

Explanation: Electrons are negatively charged particles arranged in orbits  around the nucleus of an atom and determining all of the atom's physical and chemical properties  except mass and radioactivity.
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We wouldn't have Coronavirus

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