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
To find out how many electrons you need to equal the mass of one dust particle, you would use the following expression:
\( \frac{mass\ of\ dust\ particle}{mass\ of\ one\ electron} = \frac{7.5x10^{-10}\ kilograms}{9.1x10^{-31}\ kilograms} \)