Q22 of 44 Page 8

Express unified atomic mass unit in kg.

One unified atomic mass unit is defined as mass of one atom of C-12.


We know that molar mass of C-12 atom=12 gm/mole


mass of 1 atom=


And 1unified mass unit=


=


More from this chapter

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20

The radius of atom is of the order of 1 Å and radius of nucleus is of the order of Fermi. How many magnitudes higher is the volume of atom as compared to the volume of nucleus?

 21

Name the device used for measuring the mass of atoms and molecules.

 23

. A function F(θ) is defined as

F (θ) = 1 – θ + - +


Why is it necessary for θ to be a dimensionless quantity?


 24

Why length, mass and time are chosen as base quantities in mechanics?