Which condition In a nebula would prevent nuclear fusion

Chemistry

2 answers:

german3 years ago

7 0

Answer:

Decreasing the overall volume of the gases in a nebula would prevent nuclear fusion.

Explanation:

A nebula refers to a huge cloud of gas and dust in space. Some nebulae arise from the gas and dust withdrawn due to the explosion of a dying star like a supernova. Other nebulae are the locations where the novel stars are starting to get produce. Due to this, some nebulae are also known as star nurseries. The reduction in the entire volume of gases mainly hydrogen could inhibit the nuclear fusion in the nebula.

NemiM [27]3 years ago

5 0

A decrease in the overall volume of gases namely hydrogen would prevent nuclear fusion in a nebula.

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3 years ago

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zimovet [89]

Answer:

Mostly Para

Explanation:

First, let's assume that the molecule is the toluene (A benzene with a methyl group as radical).

Now the nitration reaction is a reaction in which the nitric acid in presence of sulfuric acid, react with the benzene molecule, to introduce the nitro group into the molecule. The nitro group is a relative strong deactiviting group and is metha director, so, further reactions that occur will be in the metha position.

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Now which position will prefer to go? it's true it can go either ortho or para, however, let's use the steric hindrance principle. Although the methyl group it's not a very voluminous and big molecule, it still exerts a little steric hindrance, and the nitro group would rather go to a position where no molecule is present so it can attach easily. It's like you have two doors that lead to the same place, but in one door you have a kid in the middle and the other door is free to go, you'll rather pass by the door which is free instead of the door with the kid in the middle even though you can pass for that door too. Same thing happens here. Therefore the correct option will be mostly para.

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3 years ago