2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Oxygen yog cov khoom siv tshuaj nrog lub cim O thiab tus lej atomic 8. Nws yog ib tus tswv cuab ntawm pawg chalcogen nyob rau hauv lub sij hawm lub sij hawm, ib tug heev reactive nonmetal, thiab ib tug oxidizing tus neeg sawv cev uas yooj yim tsim oxides nrog feem ntau cov ntsiab lus thiab. ib yam li lwm cov tshuaj.
Nws tau siv oxygen nrhiav tau ntev npaum li cas?
Ib tug kws tshuaj Askiv, Joseph Priestley, nws tus kheej nrhiav pom oxygen hauv 1774 los ntawm thermal decomposition ntawm mercuric oxide thiab luam tawm nws cov kev tshawb pom tib lub xyoo, peb xyoos ua ntej Scheele luam tawm.
Thaum twg huab cua nrhiav tau?
Lub Yim Hli 1774: Priestley cais ib qho "cua" tshiab, ua rau pom cov pa oxygen. Yug hauv 1733 hauv ib lub nroog me me ze ntawm Leeds, Yauxej Pov Thawj yog tus hlob ntawm rau tus menyuam yug los rau Jonas Priestley, "tus kws hnav khaub ncaws thiab ua tiav daim ntaub," thiab Mary, tus ntxhais ntawm ib tug neeg ua liaj ua teb hauv zos.
Leej twg yog tus tsim oxygen?
Joseph Priestley (1733-1804) - Unitarian Minister, xib fwb, tus sau, thiab natural philosopher - yog Earl ntawm Shelburne tus kws sau ntawv thiab pab qhia rau nws cov tub. Hauv chav no, tom qab ntawd lub chaw kuaj mob ua haujlwm, Priestley tau nrhiav nws qhov kev tshawb nrhiav cov pa roj. Thaum lub Yim Hli 1, 1774 nws nrhiav tau oxygen.
Leej twg pom huab cua?
Joseph Priestly yog qhov paub zoo tshaj plaws rau kev nrhiav pom oxygen, tab sis Steven Johnson, tus sau phau ntawv keeb kwm tshiab ntawm Pov Thawj lub npe hu ua The Invention of Air, taw qhia tias nws txoj kev koom tes tau loj dua: nws yog thawj tus neeg xav txog ecosystems, yuav luag 200xyoo ua ntej ntawm nws lub sijhawm.
Pom zoo:
Qhov twg yog qhov pom ib txwm pom thaum percussing thaj tsam plab?
Lub plab plab uas muaj roj ntau ib txwm muaj a tympanitic tympanitic Meteorism. Tshwj xeeb. Gastroenterology. Tympanite yog ib yam mob uas muaj roj ntau ntau hauv plab hnyuv thiab ua rau mob plab. Lo lus yog los ntawm Greek τύμπανο, "nruas"
Thaum twg cov ntaub ntawv pom pom tau tsim?
In 1644, Michael Florent Van Langren, tus kws tshawb fawb Flemish, ntseeg tias tau muab thawj qhov pom kev sawv cev ntawm cov ntaub ntawv txheeb cais. Leej twg invented data visualization? Lub xyoo 1960 thiab 1970 tau pom qhov tshwm sim ntawm cov kws tshawb fawb xws li John W.
Puas pom lawv pom daniels?
Royal “Scoop” Daniel tau raug kaw rau hauv San Diego Central Jail rau hnub Wednesday yav tav su thiab raug kaw ntawm $ 175,000 daim ntawv cog lus. Cov neeg saib xyuas ciam teb tau ntes nws. Breckenridge Tub Ceev Xwm Tus Thawj Saib Xyuas Rick Holman tau hais tias "
Dab puas kho lawv tus kheej thaum lawv poop?
Dab siv lub ntiaj teb cov hlau nplaum thaum lawv tso siab rau lawv tus kheej. Tsis tas li ntawd xwb, tab sis canines xaiv ua li ntawd nyob rau sab qaum teb-sab qab teb axis, ib txoj kev tshawb fawb tshiab luam tawm nyob rau hauv phau ntawv Journal Frontiers hauv Zoology hais.
Thaum twg Mendel qhov kev tshawb pom pom?
Mendel thawj zaug nthuav tawm nws cov txiaj ntsig hauv ob qhov kev qhuab qhia cais hauv 1865rau Natural Science Society hauv Brünn. Nws daim ntawv "Kev sim ntawm tsob nroj Hybrids" tau luam tawm nyob rau hauv lub zej zog cov phau ntawv journal, Verhandlungen des naturforschenden Vereines hauv Brünn, xyoo tom ntej.
