Question

An electron has a mass of 9.11×10−31kg. A proton has a mass of 1.67×10−27kg. What is the mass of a proton in electron-masses?

a) 1836 electron-masses
b) 1800 electron-masses
c) 1700 electron-masses
d) 1750 electron-masses

Answer 1

The mass of a proton is approximately 1836 times the mass of an electron, therefore the correct answer is 1836 electron-masses (option a).

Step-by-step explanation:

The mass of a proton (1.67×10−27 kg) in electron-masses can be calculated by dividing the proton's mass by the mass of an electron (9.11×10−31 kg). The calculation is as follows:

Mass of proton / Mass of electron = 1.67×10−27 kg / 9.11×10−31 kg ≈ 1836

Therefore, the mass of a proton in terms of the mass of an electron is approximately 1836 electron-masses.