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47 Maths Exercise Solutions

Given the mass of iron nucleus as and , find the nuclear density?

Calculate the energy equivalent of g of substance.

Find the energy equivalent of one atomic mass unit, first in Joules and then in . Using this, express the mass defect of in .

The half-life of undergoing α-decay is years. What is the activity of sample of ?

Tritium has a half-life of undergoing beta decay. What fraction of a sample of pure tritium will remain undecayed after .

We are given the following atomic masses:

Here the symbol is for the element protactinium

Calculate the energy released during the alpha decay of .

Here the symbol is for the element protactinium

Calculate the energy released during the alpha decay of .

We are given the following atomic masses:

Here the symbol is for the element protactinium

Show that can not spontaneously emit a proton.

Here the symbol is for the element protactinium

Show that can not spontaneously emit a proton.

Two stable isotopes of lithium and have respective abundances of and .These isotopes have masses and , respectively. Find the atomic mass of lithium.

Boron has two stable isotopes, and Their respective masses are and , and the atomic mass of boron is 10.811 u. Find the abundances of them.

The three stable isotopes of neon and , have respective abundances of and . The atomic masses of the three isotopes are and respectively. Obtain the average atomic mass of neon.

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