... = -1, 602 .10 -19 C 1 –qp = +1, 602 .10 -19 C 1 +qn = 00Quy ướcKhối lượng (m)me = 9 ,10 95 .10 - 31 kg ≈ 0,549 .10 -3 ump= 1, 6726 .10 -27 kg ≈ 1 umn = 1, 6748 .10 -27 kg ≈ 1 uI. ... 22C¸ch 1: Bµi tËp cñng cèBµi tËp cñng cè 31 27nt27m 35 9 ,10 95 .10 35 1, 6726 .10 45 1, 6726 .10 − −−= × + × ++ ×25 1, 3406 .10 kg−=⇒25H27 1, 306 .10 kgM 80,7u 1, 66055 .10 kg−−= =C¸ch 2: 3M ... 8p cã 8e⇒mp = 8 1, 6726 .10 −27 = 13 ,3808 .10 −27 kgmn = 8 1, 6748 .10 −27 = 13 ,3984 .10 −27 kgme = 8×9 ,10 95 .10 − 31 = 72,876 .10 − 31 kgmhn = mp + mn = 26,7792 .10 −27 kgmnt =...