Final answer:
To determine the total charge that moved through a pocket calculator, we multiply the number of electrons, 1.80 x 10^20, by the charge of one electron, -1.602 x 10^-19 coulombs, which gives us approximately 28.836 coulombs of charge.
Step-by-step explanation:
If 1.80 x 1020 electrons move through a pocket calculator during a full day's operation, we can calculate the total charge in coulombs that moved through it using the charge of a single electron. One electron has a charge of approximately -1.602 x 10-19 coulombs. To find the total charge, we multiply the charge of one electron by the number of electrons that moved through the calculator.
Total charge (Q) = Number of electrons (n) x Charge of one electron (e)
Q = 1.80 x 1020 x -1.602 x 10-19
Q = -28.836 coulombs
Since the charge transferred is always considered positive for electrons flowing in a conventional circuit, the negative sign is often ignored, so approximately 28.836 coulombs of charge moved through the pocket calculator during a full day's operation.