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fiasKO [112]
4 years ago
11

Select the correct answer.

Chemistry
1 answer:
Gre4nikov [31]4 years ago
6 0

Answer:  E

Explanation: The ball is yellow so it can easily represent the sun

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g n the following three compounds(1,2,3) arrange their relative reactivity towards the reagent CH3Cl / AlCl3. Justify your order
Sedbober [7]

Answer:

3 > 2> 1

Explanation:

Aromatic compounds undergo electrophilic substitution reaction which passes through a positively charged intermediate to yield the product.

Substituted benzenes may be more or less reactive towards electrophilic aromatic substitution than benzene molecule depending on the nature of the substituent.

Certain substituents increase the ease of reaction of benzene towards aromatic substitution.

If we look at the compounds closely, we will notice that toluene reacts readily with CH3Cl / AlCl3. This is because, the methyl group is electron donating hence it stabilizes the positively charged intermediate produced in the reaction.

Carbonyl compounds are electron withdrawing substituents hence they decrease the magnitude of the positive charge and hence decrease the rate of electrophilic aromatic substitution.

3 0
3 years ago
In the electron transport system, hydrogen atoms removed from NADH ultimately end up as part of __________. In the electron tran
guajiro [1.7K]
<h3>Answer:</h3>

Water

<h3>Explanation:</h3>
  • The electron transport chain is the third and the last phase of aerobic cellular respiration in living organisms.
  • During the electron transport chain, electron carriers NADH and FADH₂ are used to generate energy in the form of ATP.
  • During this phase, energy is generated through oxidative phosphorylation in the inner membrane of the mitochondrion.
  • In the electron transport chain, hydrogen ions are transferred from NADH and FADH₂ and ultimately end up as part of water.
7 0
3 years ago
The light bulb converts electrical energy into light and _________
Musya8 [376]

Answer:

The light bulb converts electrical energy into light and <u>heat energy</u>

3 0
4 years ago
Calculate the molecular mass of Na2HPO4
seropon [69]

Answer:

Molar mass of Na2HPO4=141.96, of Na2HPO4. 12H2O = 358.14: so to get the same 0.4 M: 28.65/358.14*141.96 g, add water until you reach 200ml , dissolve all solid and then filter to make sterile.

Explanation:

5 0
4 years ago
Infer: Why might a zone of upwelling be a good place to fish?
Aleks [24]

First lets define upwelling

Upwelling- a rising of seawater, magma, or other liquid

In this case, you would be looking at a river, lake, ocean, or other body of water good for fishing.

You'd want to look for a place with upwelling because when there is a rise of water, the sea creatures within it will rise too. So the fish in the bottom of a lake for example would be brought up to the surface of the water or near the surface which is where your fishing rod is trying to grab the fish.

I hope this helps! Don't be afraid to reach out with any further questions!

4 0
3 years ago
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