Find the net charge of a system consisting of 6.16*106 electrons and 7.68*106 protons. Express your answer using three significant figures. Qnet = 2.43*10-13 C

2.43 * 10^ (-13) C

Explanation:

The net charge of the system is given as the sum of the total charge of the electrons and the charge of the protons.

Qnet = (Ne * Qe) + (Np * Qp)

Ne = number of electrons = 6.16 * 10^6

Np = number of protons = 7.68 * 10^6

Charge of an electron = - 1.602 * 10^ (-19) C

Charge of a proton = 1.602 * 10^ (-19) C

Qnet = (6.16 * 10^6 * - 1.602 * 10^ (-19)) + (7.68 * 10^6 * 1.602 * 10^ (-19))

Qnet = - 9.87 * 10^ (-13) + 12.30 * 10^ (-13)

Qnet = 2.43 * 10^ (-13) C