Teb thiab piav qhia: Dichloromethane yog siv vim nws yog me ntsis hydrophobic thiab caffeine ntau soluble nyob rau hauv nws piv rau dej
Ib qho kev hloov AC feem ntau pheej yig "microgap" kev tsim kho. Thaum hloov OFF, qhov sib txawv ntawm kev sib cuag tuaj yeem me me. Hauv qhov sib piv, DC hloov tuaj yeem tswj tau qhov arc rau lub sijhawm ntev, vim tias qhov hluav taws xob hla qhov hloov pauv yuav nce mus rau qhov hluav taws xob thiab nyob twj ywm rau ntawd ntev npaum li qhov khoom tseem txuas nrog
Deciduous nroj tsuag poob lawv nplooj; evergreens txwv txhua txoj kev loj hlob tshiab. Ntoo tsis muaj nplooj feem ntau hu ua liab qab. Rau qee qhov, lo lus vernal yuav siv tau
Nrhiav ib qhov chaw nrog moist, zoo-drained av. Koj yuav muaj sij hawm nyuaj tu Korean fir yog cov av tuav dej. Koj tseem yuav muaj lub sijhawm nyuaj saib cov ntoo hauv av nrog pH siab, yog li cog nws hauv cov av acidic. Loj hlob nyiaj Korean fir yog qhov yooj yim tshaj plaws nyob rau hauv lub hnub tag nrho qhov chaw
Yam tsawg kawg yog plaub hom kev rov ua kom rov zoo li qub tau raug txheeb xyuas hauv cov kab mob uas muaj sia nyob: (1) General lossis homologous recombination, (2) Kev tsis raug cai lossis tsis yog homologous recombination, (3) Qhov chaw tshwj xeeb recombination, thiab (4) replicate recombination
Lub nroog nyob deb nroog, tseem hu ua sab nrauv, nroog, peri-nroog nroog lossis nroog hinterland, tuaj yeem piav qhia tias yog ' toj roob hauv pes sib cuam tshuam ntawm lub nroog thiab lub tebchaws', lossis tseem yog thaj chaw hloov pauv uas nroog thiab nyob deb nroog siv sib xyaw thiab feem ntau. sib tsoo
Number of Stable Isotopes: 0 (Saib allisotope
CsCl muaj ib daim ntawv cog lus ionic. Txhawm rau tsim cov txheej txheem qub cubic lattice ob qho tib si ions yuav tsum muaj qhov loj me. Cs + lub vojvoog yog 174 teev tsaus ntuj thiab Cl- vojvoog yog 181 teev tsaus ntuj yog li ntawd lawv tsim ib qho chaw qub qub cubic lattice
Kev taw qhia ntawm daim ntawv qhia yog kev sib raug zoo ntawm cov lus qhia ntawm daim ntawv qhia thiab cov lus qhia sib piv hauv kev muaj tiag. Lo lus 'orient' yog muab los ntawm Latin oriens, txhais tau tias sab hnub tuaj. Qhov feem ntau cartographic convention, yog tias sab qaum teb yog nyob rau sab saum toj ntawm daim ntawv qhia
Lub npe Binary Molecular Compounds. Binary molecular compounds yog cov tebchaw uas muaj ob yam tsis yog hlau. Thawj lub ntsiab yog muab nws lub npe lub npe; Qhov thib ob yog muab nws cov cag (hydr, bor, carb, ox, fluor, thiab lwm yam) ua raws li ide
Cov metalloids yog ib pawg ntawm cov ntsiab lus nyob rau hauv lub sij hawm lub rooj. Lawv nyob rau sab xis ntawm cov hlau tom qab hloov pauv thiab sab laug ntawm cov hlau tsis yog hlau.Metalloids muaj qee yam khoom sib xws nrog cov hlau thiab qee qhov sib xws nrog cov hlau tsis muaj hlau
Lub zog ionization ntawm molecular nitrogen yog 1503 kJ mol?-1, thiab cov atomic nitrogen yog 1402 kJ mol?-1. Ib zaug ntxiv, lub zog ntawm cov electrons hauv molecular nitrogen qis dua li ntawm cov electrons hauv cov atoms sib cais, yog li cov molecule yog khi
Qhov nruab nrab ceev ntawm ib yam khoom yog tag nrho cov kev ncua deb ntawm cov khoom faib los ntawm lub sij hawm elapsed los npog qhov kev ncua deb. Piv txwv li, peb yuav hais tias ib lub tsheb muaj qhov nruab nrab ceev ntawm 25 mais ib teev. Nws qhov nrawm nrawm yuav yog 25 mais toj ib teev vim sab hnub tuaj
Qhov Loj Heev Array, yog ib lub ntiaj teb cov neeg saib xyuas xov tooj cua zoo tshaj plaws hauv ntiaj teb, muaj 27 lub xov tooj cua hauv xov tooj cua hauv Y-zoo li teeb tsa ntawm Plains ntawm San Agustin tsib caug mais sab hnub poob ntawm Socorro, New Mexico. Txhua tus kav hlau txais xov yog 25 meters (82 ko taw) inch
Cov lus teb yog: Qhov kev hloov ntawm 1 dl - dcl - deci (deciliter) chav tsev rau ib lub ntim thiab muaj peev xwm ntsuas sib npaug = rau hauv 100.00 ml (milliliter) raws li nws qhov sib npaug ntim thiab lub peev xwm hom ntsuas feem ntau siv
Ntau precisely, qhov zoo thiab tsis zoo nqi ntawm hydrogen thiab oxygen atoms uas ua li dej molecules ua rau lawv attracted rau ib leeg. Cov sib nqus sib nqus sib nqus sib nqus nyiam ib leeg zoo ib yam li qhov zoo ntawm cov atoms nyiam qhov tsis zoo them atoms hauv dej molecules
Kab nyob rau sab saum toj ntawm lub tshuab xam zauv. Ua li cas lub zog yog lub teeb lub zog hloov dua siab tshiab kom lub tshuab xam zauv ua haujlwm? Lawv hloov lub teeb lub zog rau hauv hluav taws xob hluav taws xob. zaub mov
Cov neeg siv khoom: nyiaj, tooj liab, txhuas, nichrome, graphite, mercury,, manganin. INSULATORS: sulphur, paj rwb, cua, ntawv, porcelain, mica, bakelite, polythene
Npe Physics. Ib txoj kev xav ntawm cov qauv atomic nyob rau hauv uas cov hydrogen atom (Bohr atom) yog assumed los ntawm ib tug proton li nucleus, nrog ib tug tib electron txav nyob rau hauv txawv ncig orbits nyob ib ncig ntawm nws, txhua lub orbit sib raug mus rau ib tug tshwj xeeb quantized zog lub xeev: txoj kev xav tau txuas ntxiv. rau lwm cov atoms
Periodicity txhais. Nyob rau hauv cov ntsiab lus ntawm chemistry thiab lub sij hawm lub sij hawm, periodicity yog hais txog cov tiam sis los yog rov muaj variations nyob rau hauv lub ntsiab yam ntxwv nrog nce atomic tooj. Periodicity yog tshwm sim los ntawm kev hloov pauv tsis tu ncua thiab kwv yees tau hauv cov qauv atomic
Txoj Cai. Nws lub hauv paus ntsiab lus yog ua raws li lub hauv paus ntsiab lus ntawm kev ua kom pom qhov sib txawv ntawm lub cev thiab nyob ib puag ncig nws, los ntawm kev siv cov xim yooj yim. Ib qho yooj yim zas xim muaj cov chromophore zoo uas nyiam nyiam rau cov khoom tsis zoo ntawm tes thiab cov khoom siv hluav taws xob xws li nucleic acids thiab cov protein
Lub ntsiab stain ntawm Gram txoj kev yog siv lead ua violet. Crystal violet qee zaum hloov nrog methylene xiav, uas zoo sib xws. Cov kab mob uas khaws cia cov siv lead ua violet-iodine complex tshwm ntshav xim av nyob rau hauv kev tshuaj xyuas microscopic
Franklin paub zoo tshaj plaws rau nws txoj haujlwm ntawm X-ray diffraction dluab ntawm DNA, tshwj xeeb tshaj yog Diam duab 51, thaum nyob rau ntawm King's College London, uas coj mus rau qhov kev tshawb pom ntawm DNA ob helix rau James Watson, Francis Crick thiab Maurice Wilkins tau koom lub Nobel. Nqi zog hauv Physiology lossis Tshuaj hauv xyoo 1962
Ua li no nrog paj rwb swabs los yog txhuam hniav dipped nyob rau hauv vinegar los yog txiv qaub kua txiv. Cov kua qaub los ntawm cov no yuav pab yaj lub corrosion ntawm lub cuab yeej. Txhuam nrog lub swab lossis txhuam hniav kom tshem tawm ntau qhov corrosion li sai tau. Txhua qhov seem seem tuaj yeem raug tshem tawm nrog baking soda thiab me me dej
Raws li txoj cai tam sim no, 70,000 metric tons ntawm cov pov tseg yuav raug tso cai khaws cia ntawm Yucca Roob, nrog 63,000 tons ntawm cov khoom pov tseg ua lag luam thiab qhov seem yog DOE pov tseg. Dhau li ntawm thaj av dawb huv, Yucca Roob muaj ntau yam ntxwv uas ua rau nws qhov chaw tsis tsim nyog los khaws cov khib nyiab nuclear heev
DNA yog cov txheej txheem tseem ceeb heev vim tias yog DNA tsis tau rov ua dua, ces thaum lub hlwb sib faib, yuav tsis muaj qhov tseeb ntawm DNA nyob hauv txhua lub cell. Qhov no yuav ua rau muaj teeb meem ntau hauv tib neeg lub cev. Txuas koj txoj kev xav: Qee zaum yuam kev hu ua kev hloov pauv tshwm sim thaum lub sijhawm DNA rov ua dua
Thaum Lub Kaum Ib Hlis 13, 1985, qhov tawg me me ua rau muaj qhov loj heev uas tau faus thiab rhuav tshem lub nroog Armero hauv Tolima, ua rau kwv yees li 25,000 tus neeg tuag. Qhov xwm txheej no tau dhau los ua lub npe hu ua Armero tragedy - qhov kev tua neeg tuag tshaj plaws hauv keeb kwm kaw
Ntau yam khoom siv tu, xws li xab npum thiab qhov cub ntxuav, yog cov hauv paus. Bases neutralize (tso tawm) acids. Alkalis yog cov hauv paus uas yaj hauv dej. Qhov ntau hydroxide ions ib lub hauv paus muaj, nws muaj zog dua
Lub exosphere yog txheej txheej sab nraud ntawm lub ntiaj teb huab cua. Nws pib ntawm qhov siab ntawm 500 km thiab tawm mus txog 10,000 km. Nyob rau hauv cheeb tsam no cov huab cua tuaj yeem mus txog ntau pua mais hauv qhov kev sib tw ua ntej ua ntej tsoo rau lwm qhov chaw ntawm huab cua
Ib tug compound yog ib yam khoom uas ua los ntawm ib tug meej feem ntawm ob los yog ntau tshaj cov ntsiab lus. Cov tshuaj formula qhia peb tus naj npawb ntawm atoms ntawm txhua lub caij hauv ib qho chaw. Nws muaj cov cim ntawm cov atoms ntawm cov ntsiab lus tam sim no nyob rau hauv lub compound thiab muaj pes tsawg tus muaj rau txhua lub caij nyob rau hauv daim ntawv ntawm subscripts
Tshaj San Andreas: 5 Txoj Kev Txaus Ntshai Tshaj Plaws hauv Teb Chaws Asmeskas Lub Cascadia Subduction Zone. New Madrid Seismic Zone. Ramapo Seismic Zone. Lub Hayward Fault. Lub Denali Fault System
IUPAC Cov Cai rau Alkane Nomenclature Qhia thiab npe pawg txuas nrog rau cov saw no. Tus lej ntawm cov saw sib txuas ua ke, pib ntawm qhov kawg ze tshaj ib pab pawg hloov pauv. Xaiv qhov chaw ntawm txhua pawg neeg hloov pauv los ntawm tus lej tsim nyog thiab lub npe. Sib sau ua ke lub npe, teev cov pab pawg hauv cov ntawv sau
Common Repeating Decimals thiab Lawv qhov sib npaug Fractions Repeating Decimal Equivalent Fraction 0.4444 4/9 0.5555 5/9 0.7777 7/9 0.8888 8/9
Qee tus nyiam faib biomes rau hauv tsib hom: dej, hav zoov, suab puam, tundra, thiab nyom. Cov tsib hom biomes no tuaj yeem muab faib ntxiv los ntawm qhov sib txawv ntawm lub caij lossis hom tsiaj thiab nroj tsuag. Cov dej biome muaj ib feem ntawm lub ntiaj teb uas yog them nrog dej
Ib nanosecond yog ib-billionth ntawm ib thib ob, tab sis lub sij hawm yuav ntsuas los ntawm increments luv luv. Ib qho picosecondis peb qhov kev txiav txim ntawm qhov loj dua, ib-trillionth ntawm asecond, thiab femtosecond luv dua tseem atone-quadrillionth ntawm ib thib ob
Muaj peb yam, Kepler txoj cai lij choj uas yog, ntawm lub ntiaj teb motion: 1) txhua lub ntiaj teb lub orbit yog ib tug ellipse nrog lub hnub ntawm ib tug tsom; 2) ib txoj kab koom nrog lub hnub thiab lub ntiaj teb cheb tawm thaj chaw sib npaug sib npaug; thiab 3) lub square ntawm lub ntiaj teb lub sij hawm orbital yog proportional rau lub voos xwmfab ntawm lub semi-loj axis ntawm nws
Teb Chaws Asmeskas cov txheej txheem sau cov condensate, dej ntws, thiab tso zis tsim txog li 3.6 nkas loos dej haus ib hnub twg.Txawm li cas los xij, cov neeg caij nkoj Lavxias haus dej ua tiav los ntawm cov dej ntws los ntawm cov dej thiab condensate, hla cov zis (ua tau tsawg dua li 3.6 nkas loos)
DNA, uas sawv cev rau deoxyribonucleic acid, txhais tau tias yog ib tug nucleic acid uas muaj cov noob caj noob ces
Life Cycles of Fern/Moss/Lily = 2n (diploid) = n (haploid) Antheridia (txiv neej) Archegonia (poj niam) Rhizoids (roots) GAMETOPHYTE Tshiab Sporophyte sorus SPOROPHYTE SPORANGIUM Thaum cov haploid spores npaj txhij, lawv tau tso tawm. Feem ntau cov ferns tsim tsuas yog ib hom spores (lawv yog homosporus)
Lub combustion ntawm methane los yog octane yog exothermic; nws tso lub zog