Video: Dab tsi yog qhov sib xyaw ntawm ntsev thiab dej hu ua?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov sib tov yog dej thiab ntsev yog hu ua brine tov.
Ua raws li qhov xav tau, qhov sib xyaw ntawm ntsev thiab dej yog dab tsi?
Ntsev thiab dej yog ob qho kev daws teeb meem thiab a sib tov . Ntsev , lub solute, tuaj yeem yaj hauv dej , cov kuab tshuaj, thiab cov kuab tshuaj yog homogeneously faib rau hauv cov kuab tshuaj. Yog li ntawd, nws yog ib qho kev daws teeb meem. Nws kuj yog ib sib tov vim hais tias cov khoom yuav raug cais los ntawm mechanical txhais tau tias, distillation.
Kuj Paub, ntsev thiab dej yog dab tsi? Saline dej (tseem hu ua dej ntsev , ntsev - dej los yog dej ntsev) yog dej nrog ntsev hauv nws. Nws feem ntau txhais tau tias dej los ntawm hiav txwv (sea dej ) thiab dej hiav txwv. Yuav luag tag nrho cov dej ntawm lub ntiaj teb yog saline.
Thiab cov lus nug yog, yog ntsev thiab dej heterogeneous?
Dej ntsev yog tsim los ntawm kev sib tov ntsev (NaCl) in dej . Nws yog homogeneous sib tov thiab a heterogeneous ib. Qhov sib txawv ntawm ob yog tias qhov concentration yog tib yam nyob rau txhua qhov chaw thaum muaj kev sib xyaw homogeneous, whereas, nyob rau hauv rooj plaub heterogeneous sib tov, qhov concentration txawv ntawm qhov chaw mus rau qhov chaw nyob rau hauv ib tug sib tov.
Yam khoom twg yog dej ntsev?
Tag nrho cov qauv ntawm sodium chloride yog chemically tib yam. Dej kuj yog ib yam khoom ntshiab. Ntsev yooj yim yaj hauv dej, tab sis cov dej ntsev tsis tuaj yeem muab cais ua ib yam khoom vim nws muaj pes tsawg leeg tuaj yeem sib txawv. Koj tuaj yeem yaj me me ntsev los yog ntau npaum li cas rau hauv ib qho dej.
Pom zoo:
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 sib xyaw ntawm cov dej khov thiab cov ntsev ntau hu ua?
Teb: Qhov sib tov no hu ua anti freezing agent. Feem ntau cov lus ntsev yog cov tshuaj sodium chloride
Dab tsi yog qhov sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
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Dab tsi yog qhov sib xyaw ntawm cov khoom sib xyaw?
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Dab tsi yog qhov sib txawv ntawm cov kab lus sib npaug thiab qhov sib npaug sib npaug?
Cov kab lus sib npaug muaj qhov muaj txiaj ntsig zoo ib yam tab sis tau nthuav tawm nyob rau hauv ib hom ntawv sib txawv uas siv cov khoom ntawm cov lej xws li ax + bx = (a + b) x yog cov kab lus sib npaug. nruj me ntsis, lawv tsis yog 'sib npaug', yog li peb yuav tsum siv 3 kab sib luag hauv 'sib npaug' es tsis yog 2 raws li qhia ntawm no