Qhov hnyav nruab nrab yog dab tsi?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Ib qho atomic pawg yog cov hnyav nruab nrab ntawm pawg ntawm cov isotopes ntawm lub ntsiab. Ib qho atomic pawg tuaj yeem suav tau muab cov txheeb ze abundances ntawm lub caij ntuj tsim isotopes thiab cov pawg ntawm cov isotopes paub.

Yog li ntawd, koj ua li cas xam qhov hnyav nruab nrab qhov hnyav?

Rau xam tus nruab nrab loj , ua ntej hloov cov feem pua rau hauv feem (sib faib lawv los ntawm 100). Ces, xam tus pawg tus lej. chlorine isotope nrog 18 neutrons muaj ntau ntawm 0.7577 thiab a pawg npe 35am.

Kuj Paub, vim li cas lub atomic mass ntawm ib lub caij yog qhov hnyav nruab nrab hnyav? Cov pawg sau rau ntawm daim ntawv teev sijhawm yog ib qho nruab nrab atomic mass muab los ntawm tag nrho cov paub isotopes ntawm ib keeb . Qhov no nruab nrab yog a hnyav nruab nrab , lub ntsiab lus ntawm isotope tus txheeb ze abundance hloov nws cuam tshuam rau qhov kawg nruab nrab . Yog vim li cas qhov no ua tiav yog vim tsis muaj kev teeb tsa pawg rau ib keeb.

Ua kom pom qhov no, qhov hnyav nruab nrab qhov hnyav txhais li cas?

Yuav kom daws tau qhov teeb meem no, peb txhais lub atomic hnyav raws li cov hnyav nruab nrab loj ntawm txhua qhov tshwm sim tshwm sim (qee zaus radioactive) isotopes ntawm lub caij. A hnyav nruab nrab yog txhais raws li. Atomic Qhov hnyav = (% abundance isotope 1100) ×( pawg ntawm isotope 1) + (% abundance isotope 2100) × ( pawg ntawm isotope 2) +

Piv txwv li qhov hnyav nruab nrab yog dab tsi?

Ntsuas qhov nruab nrab . Ib txoj hauv kev suav ib hom lej txhais tau tias ntawm ib pawg ntawm cov lej uas qee cov ntsiab lus ntawm lub teeb muaj qhov tseem ceeb (qhov hnyav) ntau dua li lwm tus. Piv txwv : Qib feem ntau suav nrog a hnyav nruab nrab . Piv txwv tias ua homework suav 10%, quizzes 20%, thiab xeem 70%.