the mass of a dust particle is approximately 7.5x10^-10 kilograms and the mass of an electron is 9.1x10^-31 kilograms. which expression would you use to find out how many electrons you need to equal the mass of one dust particle

Answer 1

To find out how many electrons you need to equal the mass of one dust particle, you would use the following expression:

\( \frac{mass\ of\ dust\ particle}{mass\ of\ one\ electron} = \frac{7.5x10^{-10}\ kilograms}{9.1x10^{-31}\ kilograms} \)