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3 years ago

How did the cathode ray tube contribute to the history of atomic structure?

1 answer:

3 0

J.J Thompson discovered the electron. He demonstrated that cathode rays were negatively charged. He then realized that the accepted model of an atom did not come out positive nor negative

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Why is acylation reagent important.

shepuryov [24]

Answer:

Acylation can be used to prevent rearrangement reactions that would normally occur in alkylation.

3 0

2 years ago

Sulfuric acid dissolves and completely dissociates in water and a solvation sphere of water molecules forms around the ions. Thi

Elan Coil [88]

This solute-solvent interaction will release energy into the surroundings and makes the beaker warm.

Explanation:

The sulfuric acid is dissolved in water and it formed a solvation sphere of water molecules around the sulphur ions. So on stirring the beaker is getting warm. As the beaker is getting warm, this means the reaction occuring between sulfuric acid and water is exothermic reaction.

And so the energy is released into the surroundings. The energy released came from the breaking of bonds of sulfuric acid, as the acid is getting dissociated in water.

So, the release of energy in the surroundings lead to the warming of the beaker. Hence, the solute-solvent interaction release energy into the surroundings.

3 0

3 years ago

Read 2 more answers

問上面照片的題目，何者不是構成蛋白質的主要成分原素？

maxonik [38]

What does this even say

8 0

3 years ago

2. What do you get when you add the following

irga5000 [103]

a. one carbon and one oxygen?

Answer:

(1) Carbon + (1) Oxygen = Carbon monoxide (CO)

Explanation:

Carbon monoxide (CO), an odorless, colorless gas, which can cause sudden illness and death, is produced any time a fossil fuel is burned.

https://www.cdc.gov/co/default.htm

b. one carbon and two oxygen?

Answer:

(1) Carbon + (2) Oxygen = Carbon dioxide (CO2)

Explanation:

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.

https://www.britannica.com/science/carbon-dioxide

c. one carbon and four chlorine?

Answer:

(1) Carbon + (4) Chlorine = Carbon tetrachloride (CCl4)

Explanation:

Carbon Tetrachloride is a clear, colorless, volatile and very stable chlorinated hydrocarbon. Carbon Tetrachloride is used as a solvent for oils and fats, as a refrigerant and as a dry-cleaning agent. Inhalation of its vapors can depress central nervous system activity and cause degeneration of the liver and kidneys. Carbon Tetrachloride is reasonably anticipated to be a human carcinogen based on evidence of carcinogenicity in experimental animals.

https://pubchem.ncbi.nlm.nih.gov/compound/carbon_tetrachloride

I hope this helps, if it dose please give brainest, and have a nice day!

8 0

3 years ago

How many protons are in the nucleus of a lithium atom in its excited state

Oksana_A [137]

Answer:

the answer is three protons

7 0

2 years ago