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Luba_88 [7]
3 years ago
9

What is an electron's movement related to ?

Chemistry
1 answer:
Marysya12 [62]3 years ago
8 0
An Electrons movement is related 

to it's amount of energy . In fact ,everything is related to it's amount of energy 

[hope this helps]

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What is a correct expression of the law of conservation mass
nekit [7.7K]
Law of conservation of mass- The total mass after a chemical reaction is exactly the same as the mass before.
5 0
4 years ago
25.0 g of a substance requires 117.4 Joules of energy to raise its temperature from 75.0 to 87.2 oC. What is the specific heat o
Sveta_85 [38]

Answer:

0.385 J/g°C

Explanation:

c = q/mΔt

c = \frac{117.4J}{25g * 12.2 C} = 0.385 J/g°C

3 0
4 years ago
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Explain each statement in terms of atomic properties:(d) Carbon bonds to itself more extensively than does any other element.
Ket [755]

Carbon forms Covalent bonds rather than ionic bonds.

<h3>About Carbon atom:</h3>

The origin of the name ‘carbon’ is a Latin word ‘carbo’ which means charcoal.

  • it is the fourth most abundant element in the entire universe. And it is the second most abundant element in our bodies after oxygen.
  • The atomic number of carbon is 6.
  • It is represented by the symbol C and is a non-metal.
  • It has 6 protons, 6 neutrons and obviously 6 electrons.
  • carbon atom is considered to be special and unique because it can bond with other carbon atoms to an almost unlimited degree.

<h3>Physical properties of carbon:</h3>

Physical properties of carbon are:

  • The physical properties of this element vary according to its allotropes.
  • The two major allotropes are diamond and graphite.
  • diamond is transparent and has no colour, graphite is opaque and black
  • Diamond is the hardest substance known to man, graphite is soft and spongy in texture
  • diamond cannot conduct electricity at all, graphite is a very good conductor of electricity.
  • Both allotropic elements are solid, non-gaseous
  • Also both diamond and graphite are insoluble in water
  • It does not melt when heated, it sublimes which is it turns to gaseous form
<h3>Uses of carbon in daily life:</h3>
  • It makes up for 18% of the human body.
  • Sugar, glucose, proteins etc. are all made of carbon.
  • The food we eat contains an important source of energy called carbohydrate.
  • Carbon in its diamond form is used in jewellery.
  • Amorphous carbon is used to make inks and paints.
  • It is also used in batteries.
  • Graphite is used as the lead in your pencils.
  • It is also used in the production of steel.
  • One of the most important uses is carbon dating. We can actually use carbon to measure the age of things. Scientists use a rare form of carbon called Carbon-14 to measure the age of fossils, bones etc.
<h3>a) Carbon atoms form covalent rather than ionic :</h3>

  The reason behind the covalent bond is it's tetravalency, that means Carbon has 4 electrons in its valence shell.

Electronic Configuration of Carbon= 1s²2s²2p²

This clearly implies deficiency of 4 electrons to complete its octet .

Now,

In case of formation of ionic bond, gain or loss of electrons takes place.

 So, Carbon has two options either it gain 4 electrons or lose 4 electrons in order to form anion and cation respectively.

Both these possibilities are practically not possible.

Hence, in order to complete octet , Carbon prefers to share 4 electrons with any element rather than to form ion.  And sharing electrons helps both the atoms.

Thus from the above conclusion we can say that, Carbon forms Covalent bonds rather than ionic bonds.

b) Carbon has 4 valence electrons, so it can achieve a full outer energy level by forming four covalent bonds.

 When it bonds only with hydrogen, it forms compounds called hydrocarbons.

 Carbon can form single, double or triple covalent bonds with other atoms in order to complete its octet.

d) The carbon atom is unique among elements in its tendency to form extensive networks of covalent bonds not only with other elements but also with itself. Moreover of all the elements in the second row, carbon has the maximum number of outer shell electrons (four). capable of forming covalent bonds.

 Thus from the above conclusion we can say that, Carbon bonds to itself more extensively than does any other element.

Learn more about Carbon here: brainly.com/question/10932641

#SPJ4

Disclaimer: The question given was incomplete on portal, Here is the complete question.

Question: Explain each statement in terms of atomic properties:

(a) Carbon engages in covalent rather than ionic bonding.

(b) Carbon has four bonds in all its organic compounds

d)  Carbon bonds to itself more extensively than does any other element.

3 0
2 years ago
Why in a stream containing water, the mole fraction of a given
Rashid [163]

Answer:

A liquid, at any temperature, is in equilibrium with its own steam. This means that on the surface of the liquid or solid substance, there are gaseous molecules of this substance. These molecules exert a pressure on the liquid phase, a pressure known as vapor pressure.

In chemistry, when we talk about dry basis, we talk about a state in which the presence of water in a gaseous state is denied for the calculation. So vapor pressure equals zero.

When we talk about the wet basis, the presence of water in the steam is considered for the calculation, which normally is expressed as a percentage or moisture.

In summary, for a gas mixture steam:

  • For dry basis, we just have <em>component A, component B....</em>
  • For wet basis, we have <em>water vapor, component A, component B...</em>

So, in wet basis we have an extra component (water).

Assuming we only have 2 components in our steam, and being X the molar fraction of eact component:

  • For dry basis: Xa + Xb = 1................................. Xa = 1 - Xb
  • For wet basis: Xa + Xb + Xwater = 1 .............Xa = 1 - Xwater - Xb

For dry basis the mole fraction of A it is obtained by subtracting the molar fraction of B from one. And for wet basis, we have to substract the molar fraction of B <u>AND </u>the molar fraction of water vapor. So, logically, the mole fraction Xa will be less for wet basis.

6 0
3 years ago
What is the role of neutrons in an atom??
Colt1911 [192]
They're only found in the nucleus and play an important role in keeping the atom stable because they carry a negative charge to counteract the proton's positive charge. 
7 0
3 years ago
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