Atomic mass units, Chemistry

Assignment Help:

Q. What is Atomic Mass Units?

Ans. Notice in the last column of the table, the masses of the subatomic particles are reported in atomic mass units. The actual masses of electrons, protons and neutrons are so small and, consequently, inconvenient to work with. Therefore, scientists have developed a relative scale to report mass units. In this scale, a unit of mass is called the atomic mass unit, or amu. An amu is approximately the mass of one proton or one neutron. Since the mass of an electron is so small relative to the masses of the proton and neutron, it is assigned an atomic mass of 0 amu.

According to the International Union of Pure and Applied Chemistry (IUPAC), the mass of carbon-12 is exactly 12 amu. All other atomic masses are based on this standard.


Related Discussions:- Atomic mass units

Sodium aluminates is a better coagulates then alum, Q.   why is sodium alum...

Q.   why is sodium aluminates is a better coagulates then ferrous sulphates or alum? Ans. Sodium aluminates (NaAlO 2 ): It is better coagulant than FeSO 4 and alum because i

Analysis of electronic spectrum of an organic, account for the effects of s...

account for the effects of solvents on the wavelength of absorption of the acetone in terms of the hydrogen bonding properties of the solvent used

Draw the structure of xef2 molecule, a) Give a chemical test to distinguish...

a) Give a chemical test to distinguish between aniline and N-methyl aniline. Draw the structure of XeF2 molecule. b. Write the outer electronic configuration of Cr atom (Z =

Hydrogyn, does hydrogyn react with magnesium

does hydrogyn react with magnesium

What are the primary source of energy, Q. What are the primary source of en...

Q. What are the primary source of energy ? Oils and fats form an integral part of the dietaries the world over. In the body they are the primary source of energy. As you know,

Explain the types of isomers, Q. Explain the types of Isomers? Ans. ...

Q. Explain the types of Isomers? Ans. Three types of isomers are chain isomers, position isomers, and functional group isomers: Chain isomers are isomers which differ in

Redox reactions, How do i balance the following equation: Ni+CO==>NI(CO)4? ...

How do i balance the following equation: Ni+CO==>NI(CO)4? I can''t figure out the oxidation state of Ni and C on the product side.

Show the factors affecting equilibrium position, Q. Show the Factors Affect...

Q. Show the Factors Affecting Equilibrium Position? Ans. The term equilibrium position refers to the relative proportions of reactants and products in the equilibrium mixt

Relating Careers to Chemistry, What impact does Chemistry have on linguisti...

What impact does Chemistry have on linguistic anthropology?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd