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adell [148]
3 years ago
5

Which is a way that paleontologists have contributed to humans' understanding of the history of life?

Chemistry
2 answers:
Gnoma [55]3 years ago
4 0

Answer:

b

Explanation:

Elenna [48]3 years ago
3 0

Answer:b

Explanation:

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Draw a mechanism for this reaction. 5-hydroxypentanoic acid forms 2-oxanone in the presence of acid. draw all missing reactants
Licemer1 [7]

Answer: -

The first step involves protonation of the carbonyl oxygen.

After protonation, the Alcohol oxygen now attacks the carbon of the carbonyl.

Thus a six membered ring is formed with 5 carbon atoms and 1 oxygen atom. The 1st position carbon atom has 2 OH groups.

One of these gets again protonated.

This leaves as water. With the loss of the H+, there results a carbonyl at 1 position.

Thus 5-hydroxypentanoic acid forms a lactone or 2-oxanone in presence of acid.

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3 years ago
How do you think climate change affected the strength of the hurricane?
Aleksandr [31]
It effected it because the hurricanes just kept growing bigger and bigger
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3 years ago
What would happen if you shone a lazer light into a glass of water?
Aleonysh [2.5K]

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Reflection/change of direction

Explanation:

When the light of the laser hits the glass of water, it reflects and goes another direction. It's basically just a change of direction. The light is mostly in the glass of water and just some reflecting off of it.

3 0
2 years ago
3. Beta decay is when a proton and ______ are emitted from a neutron.
ziro4ka [17]

Answer:

d. positron

that's the answer brainly tells me I need to write at least 20 characters and that's d u m b.

7 0
3 years ago
Please help/show work!
Keith_Richards [23]

Answer:

7.00335g

Explanation:

n=\frac{V}{V_m} \\n = \frac{11.2}{22.4} \\n= 0.5 mol

n=\frac{m}{M} \\m=nM\\m=(0.5)(14.0067)\\m=7.00335g

3 0
1 year ago
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