Video: Qhov nyiaj txiag ntawm limestone yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
US Industrial Consumption ntawm Limestone
Nyob rau hauv 2007, domestic ntau lawm ntawm industrial limestone yog kwv yees li 1.3 billion metric tons, muaj nuj nqis ntau dua $ 25 billion. Nyob rau hauv tib lub xyoo, lub teb chaws tuaj txog 430,000 metric tons ntawm industrial limestone thiab limestone cov khoom, muaj nqis txog $ 2.2 billion.
Kuj paub yog, limestone pab tau li cas?
Lwm yam kev siv suav nrog: Nws yog cov khoom siv raw rau kev tsim cov kua qaub (calcium oxide), slaked txiv qaub (calcium hydroxide), cement thiab mortar. Pulverized limestone yog siv los ua cov av txias rau neutralize acidic xau (ua liaj ua teb txiv qaub). Purified, nws yog ntxiv rau qhob cij thiab cereals raws li qhov chaw ntawm calcium.
Kuj Paub, limestone rho tawm li cas? Limestone yog rho tawm los ntawm cov pob zeb los ntawm blasting los yog mechanical excavation nyob ntawm qhov hardness ntawm pob zeb. ntxhib crushing. Tom qab crushing lub pob zeb yog txheeb rau hauv cov feem sib txawv los ntawm kev tshuaj ntsuam, tom qab uas nws mus rau ua tiav ntxiv. Hauv kev sib tsoo cov txheej txheem limestone yog av rau hmoov zoo.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog qhov nyiaj txiag tseem ceeb ntawm pob zeb?
Pob zeb muaj ntau yam kev siv uas ua rau lawv zoo heev tseem ceeb rau tib neeg lub neej. Piv txwv li, pob zeb yog siv nyob rau hauv kev tsim kho, rau kev tsim tshuaj thiab ua tshuaj thiab rau zus tau tej cov roj. Pob zeb kuj tseem ceeb heev rau cov kws tshawb fawb thaum lawv muab cov lus qhia txog lub ntiaj teb keeb kwm.
Puas yog limestone nyuaj los yog mos?
Limestone yog a mos , yooj yim ua haujlwm pob zeb uas muaj tsawg kawg yog 50% calcite, aragonite, thiab / lossis dolomite. Pob zeb tsis muaj technically muaj cov pob zeb MOHS hardness vim lawv yog cov sib xyaw ntawm cov ntxhia.
Pom zoo:
Qhov loj ntawm 1 gram atom ntawm nyiaj yog dab tsi?
Nws txhais tau tias: Qhov loj ntawm monoatomic element ingrams uas yuav muaj 1 mole ntawm nws cov atoms.Nws yog sib npaug rau atomic qhov hnyav ntawm lub caij tab sis justwritten nrog grams suffix. Rau eg. Silver hasatomic hnyav lossis atomic loj ntawm 107.8682, yog li nws cov atomic loj yog 107.8682 gm
Dab tsi yog qhov txawv ntawm qhov pom tseeb qhov loj thiab qhov ntsuas qhov ntsuas qhov tseeb?
Dab tsi yog qhov txawv ntawm qhov pom tseeb thiab qhov tseeb? Pom meej qhov loj npaum li cas yog qhov ci ntawm lub hnub qub tshwm los ntawm lub ntiaj teb thiab nyob ntawm qhov ci thiab qhov deb ntawm lub hnub qub. Qhov loj npaum li cas yog qhov ci ntawm lub hnub qub yuav tshwm sim los ntawm tus qauv nyob deb
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
Integers thiab floats yog ob yam sib txawv ntawm cov ntaub ntawv tus lej. Ib tus lej (feem ntau hu ua anint) yog tus lej tsis muaj tus lej lej. Float isa floating-point number, uas txhais tau hais tias nws yog tus lej uas muaj tus lej lej. Floats siv thaum xav tau ntau dua
Dab tsi yog qhov yuam kev loj tshaj plaws yog tias Irina ntsuas qhov ntev ntawm nws lub qhov rais li 3.35 feet qhov yuam kev loj tshaj plaws yog taw?
Kev daws: Qhov yuam kev loj tshaj plaws hauv kev ntsuas ntsuas tau txhais tias yog ib nrab ntawm qhov ntsuas ntsuas
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua