Home
Class 9
PHYSICS
Find the value of 1 unified atoic mass u...

Find the value of 1 unified atoic mass unit (1u) in kg.

Text Solution

Verified by Experts

`1u=(1)/(12)` of a `C_(12)` isotope.
1ml `""^(12)C=12g""^(12)C`
i.e., `N_(A)` number of `""^(12)C=12g` [`thereforeN_(A)`=Avogadro number]
`therefore 1u=(1)/(12)xx(1)/(N_(A))xx12g=(1)/(N_(A))g=(1)/(1000N_(A))kg=1.6xx10^(-27)kg`.
Promotional Banner

Similar Questions

Explore conceptually related problems

What is the relation between unified atomic mass unit (u) and electron unit ?

What is unified atomic mass unit ? Determine the equivalent energy of 1 u in MeV unit.

Mass of a proton or a neutron is approximately 939 MeV, but unified atomic mass unit is approximately 931 MeV. What is the reason of this difference ?

Find the value of x for which the area of the triangle with vertices at (-1,-4),(x,1)and(x,-4) is 12^((1)/(2)) square units .

Find out the value of force with which 5 kg mass object is pulled by earth?

Find the values of each of the following : If sin ("sin"^(-1)1/5+"cos"^(-1)x)=1 then find the value of x.

A sphere of mass 40 kg is alternated by another sphere of mass 15kg with a force of 1/(10) mg -wt . Find the value of G if the separation between the spheres is 20 cm.

The numerical values of the volume and the lateral surface area of a right circular cone are equal. If the height and the radius of the cone are h unit and r unit respectively , then find the value of (1)/(h^2)+(1)/(r^2) .

A fire engine raises 6 kL of water per minute to a height of 2m and ejects it at 9.2m*s^(-1) . Find the power of the engine. Given mass of 1L of water is 1 kg.

Atomic mass of nitrogen is 14.0067 u. find out the mass of onee nitrogen atom (up to 3 significant figures).