If your body develops a charge of -17 (microcoulombs), how many excess electrons has it acquired, and what is their collective mass?

Answer 1

Q = -17*10^-6 Coulombs

electron is -1.6 * 10^-19 Coulombs/electron

so
-17*10^-6 *(-1/1.6) * 10^19
= 10.6 * 10^13 electrons

multiply that by 9.1*10^-31 kg/electron to get kilograms if you need grams instead multiply by 10^3 again

Answer 2

12