Chapter 4.2, Problem 11SSC

Interpretation Introduction

Interpretation:

Difference needs to be expressed in kilograms between the mass of a proton and the mass of an electron.

Concept introduction:

Proton is a subatomic particle that carries a positive charge. An electron is a subatomic particle that carries a negative charge.

Answer to Problem 11SSC

Difference in mass of proton and mass of electron in kilogram is $1.672\times {10}^{-27}kg$.

Explanation of Solution

Mass of proton $=1.673\times {10}^{-24}g$

Mass of electron $=9.11\times {10}^{-28}g$

Now,

Difference in mass of proton and mass of electron in kilogram is calculated as follows:

$=1.673\times {10}^{-24}g-9.11\times {10}^{-28}g$

$=1.673\times {10}^{-24}\times \frac{1kg}{1000kg}=1.672\times {10}^{-27}kg$

Conclusion

Thus, $1.672\times {10}^{-27}kg$ is the difference of mass of proton and electron in kilogram.