Video: Koj npaj npaj cov tshuaj daws li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A Tshuag daws yog npaj los ntawm qhov hnyav ntawm qhov tsis tsim nyog ntawm cov khoom ntshiab lossis los ntawm kev ntsuas qhov ntim tsis tsim nyog ntawm cov kua ntshiab thiab diluting rau lub ntim paub. Yuav ua li cas qhov no ua tiav nyob ntawm qhov xav tau concentrationunit.
Cov tib neeg kuj nug, koj yuav npaj cov tshuaj daws rau cov tshuaj hnyav li cas?
Thawj kauj ruam hauv kev ua ib qho serial dilution yog totake ib tug paub ntim (feem ntau yog 1ml) ntawm Tshuag thiab muab tso rau hauv ib lub ntim ntawm cov dej distilled (feem ntau 9ml). Qhov no ua rau 10 ml ntawm dilute daws . Qhov no dilute daws muaj 1mlof extract /10ml, ua rau 10-fold dilution.
Ib yam li ntawd, koj ua li cas npaj concentration ntawm kev daws teeb meem? Txoj Kev 2 Nrhiav Kev Ntsuas Zoo nyob hauv Feem pua lossis Tshooj Ib Leeg
- Nrhiav qhov hnyav ntawm qhov hnyav hauv grams.
- Txiav txim siab tag nrho qhov hnyav ntawm cov tshuaj hauv grams.
- Faib qhov loj ntawm lub solute los ntawm tag nrho cov loj ntawm thesolution.
- Muab koj cov lus teb los ntawm 100 yog tias koj xav pom qhov feem pua kev mloog lus.
Ib yam li ntawd, vim li cas cov kev daws teeb meem npaj tau npaj?
A Tshuag daws yog ib qho concentrated daws uas yuav raug diluted rau qee qhov qis dua rau kev siv tiag. Cov kev daws teeb meem Tshuag yog siv los cawm kev npaj sijhawm, khaws cov ntaub ntawv, txo qhov chaw cia, thiab txhim kho qhov tseeb uas ua haujlwm qis dua kev daws teeb meem yog npaj.
Kev daws 1% yog dab tsi?
A ib feem pua daws yog txhais raws li 1 gram ntawm solute rau 100 milliliters qhov ntim kawg. Piv txwv, 1 gram ntawm sodium chloride, nqa mus rau qhov kawg ntawm 100 ml nrog dej distilled, yog ib qho 1 NaCl % ua daws . Kom pab nco qab lub ntsiab txhais ntawm a 1 % daws , nco ntsoov tias ib gram yog qhov hnyav ntawm ib milliliter dej.
Pom zoo:
Koj yuav ua li cas npaj npaj ntub dej?
Ntub Dej Ntws: Muab cov kua dej tso rau hauv nruab nrab ntawm cov swb. Muab cov qauv piv rau cov kua, siv tus tweezers. Ntawm lub kaum sab xis, tso ib sab ntawm daim npog npog tiv thaiv cov swb ua kev sib cuag nrog sab ntug ntawm cov kua ua kua. Qhib lub npog maj mam, zam kom tsis muaj cua npuas. Tshem cov dej ntau dhau nrog daim phuam ntawv
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Dab tsi yog qhov sib txawv ntawm cov tshuaj yuav tshuaj thiab cov lus nug ntawm cov tshuaj hauv khw muag tshuaj?
Cov tshuaj yuav yog cov tshuaj uas xav kom kws kho mob sau tseg kom muab faib tawm. Hauv lub txee, cov tshuaj yog cov tshuaj zoo li Advil lossis Tylenol uas koj tsis xav tau kws kho mob sau tseg los yuav. Qhov sib txawv tseem ceeb ntawm ob yog tias koj yuav tsum muaj daim ntawv yuav tshuaj tshuaj yog tias nws yog tshuaj yuav tshuaj