Video: Puas yog tib neeg tsim los ntawm qhov teeb meem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tau kawg lawv. Yog tib neeg tsis yog ua ntawm qhov teeb meem , tab sis antimatter, koj yuav tsis muaj nyob tam sim no. Thaum kawg, peb tsis tuaj yeem xaus tias peb yog leej twg tiag teeb meem los yog antimatter, tab sis raws li cov ntsiab lus tam sim no rau ob nqe lus, tib neeg yog tseeb teeb meem.
Ntawm no, tib neeg lub cev yog tsim los ntawm cov teeb meem?
Yuav luag 99% ntawm qhov loj ntawm lub tib neeg lub cev yog ua nce ntawm 6 lub ntsiab lus: oxygen, carbon, hydrogen, nitrogen, calcium, thiab phosphorus. Tsuas yog li 0.85% yog tsim los ntawm lwm tsib lub ntsiab lus: potassium, sulfur, sodium, chlorine, thiab magnesium. Tag nrho 11 yog tsim nyog rau lub neej.
Tom qab ntawd, lo lus nug yog, dab tsi yog tsim los ntawm? atoms
Kuj paub, tib neeg puas tseem ceeb lossis lub zog?
Hauv lub neej, cov tib neeg lub cev muaj xws li teeb meem thiab zog . Qhov ntawd zog yog ob qho tib si hluav taws xob (impulses thiab signals) thiab tshuaj (reactions). Tej tshuaj zog ces hloov mus rau hauv kinetic zog uas yog thaum kawg siv zog rau peb cov leeg.
Puas yog tib neeg ua los ntawm dej?
Txog li 60% ntawm cov tib neeg tus neeg laus lub cev yog dej . Raws li HH Mitchell, Journal of Biological Chemistry 158, lub hlwb thiab lub plawv yog tsim ntawm 73% dej , thiab lub ntsws muaj li 83% dej . Cov tawv nqaij muaj 64% dej , cov leeg thiab ob lub raum yog 79%, thiab txawm tias cov pob txha muaj dej: 31%.
Pom zoo:
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Puas muaj teeb meem los ntawm qhov kev taw qhia qhov chaw sib npaug mus txog?
Qhov no ib txwm tshwm sim thaum cov tshuaj tiv thaiv nce mus txog qhov sib npaug. Tsis yog, nws tsis muaj teeb meem los ntawm qhov kev taw qhia qhov chaw sib npaug mus txog. Ob qhov kev sim yuav muab tib txoj haujlwm sib npaug vim tias ob qho kev sim pib nrog stoichiometric cov nyiaj reactants lossis cov khoom lag luam
Qhov teeb meem twg tso cai rau lub teeb hla ncaj qha los ntawm nws?
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Qhov kev sib npaug twg yog qhov tsim nyog los suav cov cua sov uas tsim los ntawm HCl NaOH cov tshuaj tiv thaiv?
Xam cov naj npawb ntawm moles ntawm lub hauv paus koj ntxiv los txiav txim siab molar tshav kub ntawm qhov nruab nrab, qhia siv qhov sib npaug Δ H = Q ÷ n, qhov twg 'n' yog tus naj npawb ntawm moles. Piv txwv li, xav tias koj ntxiv 25 mL ntawm 1.0 M NaOH rau koj HCl los ua kom muaj cua sov ntawm nruab nrab ntawm 447.78 Joules
Puas yog txoj cai ntawm kev txuag cov teeb meem thiab pawg tib yam?
Txoj cai lij choj ntawm kev txuag ntawm cov teeb meem los yog lub hauv paus ntsiab lus ntawm kev txuag teeb meem hais tias qhov loj ntawm ib yam khoom lossis kev sau ntawm cov khoom yeej tsis hloov thaum lub sij hawm, txawm li cas los xij ntawm cov khoom siv hauv lawv tus kheej. Cov huab hwm coj tsis tuaj yeem tsim lossis rhuav tshem