Txoj kev sib cais yuav tsum tau tso tawm ntau zaus thaum lub sijhawm co kom txo tau cov pa ntau dhau. … Lub qia ntawm lub funnel yuav tsum tau taw qhia rau hauv lub fumehood thaum lub sij hawm venting txheej txheem kom tsis txhob txau leej twg nrog cov ntsiab lus ntawm lub funnel.
Yuav ua li cas yog tias koj tsis tso qhov sib cais?
Yuav ua li cas yog tias koj tsis nco qab tshem lub stopper ua ntej qhib qhov sib cais funnels stopcock thiab sim kom ntws tawm hauv qab txheej? Tus stopper yuav tsum tau muab tshem tawm thaum tso cov txheej txheem qis Yog tias tsis tau tshem tawm, lub tshuab nqus tsev yuav tsim nyob rau saum cov kua thaum ntws.
Vim li cas koj thiaj li yuav tsum tso qhov sib cais ntawm lub sijhawm thaum ua qhov kev rho tawm nrog cov kuab tshuaj organic?
yog vim li cas koj thiaj li yuav tsum tso lub qhov dej sib cais ib ntus thaum ua qhov kev rho tawm uas muaj cov kuab tshuaj organic? Kev sib xyaw ua kom cov evaporation ntawm volatile organic solvents tsim siab nyob rau hauv kaw qhov chaw ntawm ib tug cais funnel.
Lub hom phiaj ntawm kev tso qhov kev sib cais funnel quizlet yog dab tsi?
thaum lub sij hawm tuav cov txheej txheem, lub siab ua rau lub vapor ntawm ib daim ntawv tshuaj tiv thaiv los ntawm tshav kub ntawm kev xa cov khoom. yog li venting lub cais funnel tej lub sij hawm pab kom alleviate lub siab bcecause yog tias muaj siab heevlub seperatory funnel yuav tau tawg.
Vim li cas nws thiaj li yuav tsum tau tso qhov sib cais sib cais ntau zaus thaum ob qho kev rho tawm nrog saturated sodium bicarbonate?
A 5% sodium bicarbonate tov yog 95% dej; yog li ntawd, lwm txheej yog aqueous. Tsis tas li ntawd, kev ntxuav nrog 5% sodium bicarbonate tuaj yeem tsim cov pa roj carbon dioxide hauv qhov sib cais. Nws yog ib qho tseem ceeb heev uas yuav tsum tau tso lub qhov funnel tam sim ntawd thaum inverting thiab ua ntej co
