Video: Ua li cas koj muab txhuas thiab oxygen?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum koj muab ib daim ntawm aluminium nyob rau hauv acid kom tshem tawm cov oxide txheej. Tshem tawm thiab muab tso rau hauv acetone thiab tom qab ntawd ether. Koj yuav rau ib lub sij hawm luv heev pom ntshiab Aluminium . Nws yog electropositive heev thiab yuav hnov mob nrog oxygen sai heev rau daim ntawv Aluminium oxide.
Tsuas yog li ntawd, thaum txhuas thiab oxygen muab cov qauv?
Qhov no txhais tau hais tias cov tshuaj formula rau aluminium oxide tsuas yog Al2 O3. Ntawd yog 2 aluminium atoms rau txhua txhua 3 oxygen atoms.
Ib sab saum toj no, Aluminium teb li cas nrog huab cua? Cov tshuaj tiv thaiv ntawm aluminium nrog cua Aluminium reacts nrog oxygen, tsim cov txheej txheem tiv thaiv ntawm alumnium (III) oxide uas tiv thaiv ntxiv tshuaj tiv thaiv nrog oxygen. Zoo li magnesium, aluminium burns nyob rau hauv oxygen nrog ib tug ci ntsa iab nplaim dawb. Cov khoom hauv qhov no tshuaj tiv thaiv tseem yog alumnium (III) oxide.
Kuj Paub, yuav ua li cas thaum Aluminium reacts nrog chlorine?
Thaum twg aluminium hlau los ntawm kev sib cuag nrog tshuaj chlorine gas nyob rau hauv muaj cua sov, tsausmuag tshuaj tiv thaiv pib thiab Aluminium chloride hmoov / granule cov ntaub ntawv. Qhov no yog ib qho exothermic tshuaj tiv thaiv . Tom qab pib lub tshuaj tiv thaiv thiab vim exothermic tshuaj tiv thaiv kub siab pab hauv nws pib tshuaj tiv thaiv nyob rau hauv-nruab nrab aluminium thiab Chlorine.
Yuav ua li cas thaum koj sib tov oxygen thiab poov tshuaj?
Potassium oxide yog tsim los ntawm cov tshuaj tiv thaiv ntawm oxygen thiab poov tshuaj ; qhov tshuaj tiv thaiv no muaj peev xwm poov tshuaj peroxide, K2O2. Potassium hydroxide tsis tuaj yeem ua kom lub cev qhuav dej ntxiv rau cov oxide tab sis nws tuaj yeem hnov mob nrog molten poov tshuaj los tsim nws, tso hydrogen raws li ib tug byproduct.
Pom zoo:
Yuav ua li cas koj pom lub kaum sab xis nruab nrab muab qhov chaw thiab lub vojvoog ntawm ib lub sector?
Kev txiav txim siab Central Angle Los ntawm Sector Area (πr2) × (central angle in degrees ÷ 360 degrees) = sector area. Yog hais tias lub hauv paus lub kaum sab xis ntsuas nyob rau hauv radians, lub mis hloov mus ua: sector cheeb tsam = r2 × (central kaum hauv radians ÷ 2). (θ ÷ 360 degree) × πr2. (52.3 ÷ 100π) × 360. (52.3 ÷ 314) × 360
Yuav ua li cas koj nrhiav tau daim ntawv tivthaiv ntawm ib vector muab qhov magnitude thiab lub kaum sab xis?
VIDEO Khaws qhov no hauv kev xav, puas yog 0 ib chav vector? A unit vector yog a vector uas muaj qhov loj ntawm 1. Cov ntawv sau sawv cev rau tus qauv, lossis qhov loj, ntawm vector v. Basic unit vectors yog i = (1, 0 ) thiab j = ( 0 , 1) uas yog ntev 1 thiab muaj cov lus qhia raws qhov zoo x-axis thiab y-axis feem.
Yuav ua li cas koj pom cov molar loj ntawm txhuas nitrate?
Teb thiab piav qhia: Cov molar loj ntawm Al(NO3) 3 yog 212.996238 g/mol. Peb tuaj yeem txiav txim siab qhov molar loj ntawm txhuas nitrate los ntawm kev ntxiv cov molar loj ntawm txhuas rau hauv
Koj pom qhov ntev li cas thaum muab thaj chaw thiab ib puag ncig?
Nrhiav Length thiab Dav Thaum Koj Paub Cheeb Tsam thiab Perimeter Yog tias koj tshwm sim kom paub qhov kev ncua deb nyob ib ncig ntawm lub duab plaub, uas yog nws qhov perimeter, koj tuaj yeem daws qhov sib npaug ntawm L thiab W. Thawj qhov sib npaug yog rau thaj tsam, A = L ⋅ W, thiab qhov thib ob yog qhov perimeter, P = 2L + 2W
Yuav ua li cas tshwm sim thaum koj muab cov khoom them nqi ze ntawm Electroscope thiab vim li cas?
Hauv cov txheej txheem induction ntawm kev them nyiaj, ib qho khoom them raug coj los ze rau tab sis tsis kov lub electroscope. Qhov no tau piav qhia los ntawm cov kev them nqi zoo li lub hauv paus ntsiab lus. Lub zais pa uas tsis zoo tiv thaiv cov hluav taws xob tsis zoo, yog li yuam kom lawv txav mus los