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4 years ago

Which of the following nuclei would be the most stable?

Chemistry

2 answers:

Vika [28.1K]4 years ago

5 0

Answer: Option (D) is the correct answer.

Explanation:

For a nucleus to be stable, there should be balance between the number of protons and number of neutrons.

That is, when there are too many protons or neutrons then it will cause an imbalance which will lead to disruption in binding energy from strong nuclear forces which will make the nucleus unstable.

Hence, closer is the number of neutrons to the number of protons more stable will be the nucleus.

Thus, we can conclude that a nuclei with 10 protons, 12 neutrons would be the most stable.

Arisa [49]4 years ago

3 0

The correct answer would be option D. 10 protons, 12 neutrons because the closer the neutrons to the number of protons, the more stable.

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26. 8 g of ammonium chloride is dissolved in water to make a 0. 25 L solution. What is the molarity of the solution?

pishuonlain [190]

Answer: 0.5 M

Explanation:

Ammonium chloride has a gram formula mass of 53.49 g/mol, so 26.8 grams of ammonium chloride is 26.8/53.49 = 0.501 mol.

So since molarity = (moles of solute)/(liters of solution), the answer is 0.501 / 0.25 = 0.5 M

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3 years ago

How many total electrons are shared between two nitrogen atoms when they bond to form a diatomic nitrogen molecule?

GuDViN [60]

Explanation:

Diatomic Nitrogen molecule means the two atoms of nitrogen $N_{2}$ .

A single nitrogen contains 5 electrons in its valence shell which has 3 single electrons and one pair of electron. When the bond is being made the three single electrons makes the covalent bond with the 3 electrons of other atom which results in 3 pairs . The total electrons shared between the atoms are 3 pairs (6 electrons) . while when it completes the octate the $N_{2}$ is formed.

Nitrogen is colorless, odorless, tasteless and the inert diatomic gas.Nitrogen combines of near about 78% of Earth's atmosphere.It is non-flammable which does not support combustion , it occurs in all living organisms. Nitrogen is used in most of the Biological processes and also used in the formation of fertilizers, in the form of ammonia and ammonia based compounds.It is also used in Chemical Industries for making nylon , explosives, dyes and etc. The breathing of Nitrogen is deadly, as it displaces the oxygen.

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4 years ago

Burning a candle melts the wax, but also burns the wick. Explain how burning a candle involves both physical and chemical change

k0ka [10]

Answer:

Burning of the candle is both physical and chemical change. Burning of the candle melts the wax and hence physical state of wax has changed from solid to liquid.

Again the wax combines with the atmospheric oxygen and changes to carbon dioxide, heat and light.

Thus both the changes are accompanied by the burning of the candle.

Explanation:

hope this helps!

~mina

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3 years ago

State two types of plastics and their uses.

Svetllana [295]

Thermoplastic and thermosetting

thermoplastic:- they are easily molded and extruded into films, fibres and packaging.For eg. PVC

thermosetting:-they are hard and durable and can be used for aircraft parts,tires and auto parts .For eg. phenolic resins.

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7 0

2 years ago

Read 2 more answers

Non-renewable energy is often called?

DIA [1.3K]

Answer:

It is also called a finite resource

Explanation:

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3 years ago