Vim Li Cas Siv [75% Cawv] Rau Kev Txiav Txim Siab Hauv Kev Tsim Khoom Noj?

Kev haus dej cawv zoo tshaj plaws rau kev siv kom tsis muaj menyuam yog 75%

Lub zog ntawm cawv' s kom tsis muaj menyuam thiab cov tshuaj tua kabmob muaj peev xwm, thiab nws cov concentration ua lub luag haujlwm tseem ceeb, siab dhau lossis qis dhau yuav tsis ua haujlwm, cov txiaj ntsig zoo yog 75%.

Tom qab kuaj, 75% cawv tuaj yeem coagulate cov proteins uas ua rau cov kab mob uas tsis ua rau lub hnab ntawv tiv thaiv uas tiv thaiv kev nkag mus ntawm cawv-los ntawm ntau yam. Yog li, cov cawv tua yam tseem tuaj yeem nkag mus rau hauv cov kab mob ua rau cov kab mob. Lub siab osmotic ntawm 75% cawv zoo ib yam li cov kab mob. Nws tuaj yeem maj mam thiab txuas ntxiv mus rau hauv cov kab mob ua ntej cov nplaim protein ntawm cov kab mob yog qhov tsis txaus kom ncav cuag kev tua. Qhov ntau npaum no tuaj yeem ua kom lub cev qhuav dej, deform thiab coagulate tag nrho cov kab mob ntawm cov kab mob, thiab tseem tuaj yeem tua tag nrho cov kab mob hauv cov txheej txheej sab nraud, nruab nrab thiab sab hauv, ua tiav lub hom phiaj thiab ua kom zoo ntawm kev ua kom huv. Yog li, kev saib xyuas cov cawv zoo rau kev saib xyuas yuav tsum yog 75%. Kev tua cov cawv tuaj yeem nkag rau hauv lub cev kab mob, thiab tseem tuaj yeem nkag mus rau hauv qhov tob tob ntawm cov kab mob hauv cov kab mob. Thaum nws chwv nrog txhua tus kab mob, nws yuav tua txhua tus neeg. Siv cawv tshuaj ntxuav kab mob kev tshawb fawb thiab meej pem.

3. Ntev npaum li cas thiaj li ua tiav kom tsis muaj menyuam tau tiav nrog 75% cawv?

Cawv ntxuav kab mob tsis ua hauj lwm tam sim ntawd. Txhawm rau ntxuav cov tshuaj tua kab tas li, khaws nws rau ntawm koj txhais tes kom ntev li 30 lij thiab rub koj ob txhais tes rov qab thiab sab nraud (zoo li ntxuav tes).

4. Lub sijhawm ntev li cas ib qho kev ua kom tus mob?

Hais lus nruj, nws feem ntau yog tshuaj tua kab mob ib zaug ib teev. Tom qab siv sijhawm ntev, cov dej cawv yuav yaj thiab nws yuav tsis tuaj yeem muab tshuaj tua kab mob. Yog li, tom qab cov dej ntxuav kab mob tau npaj, nws yuav tsum muab ntim thiab khaws cia rau hauv lub raj mis ntim zoo tam sim ntawd siv tom qab; lub raj mis lub hau yuav tsum raug kaw tam sim ntawd tom qab siv los tiv thaiv qhov kub siab los ntawm kev txo qis vim los ntawm volatilization, hmoov av thiab lwm yam kab mob kis tau, cuam tshuam rau cov nyhuv ua kom tsis muaj menyuam. Cawv kuj ua rau yoog ntau dua, yog li cov roj ntsha tsis huv rau lub cev yuav tsum tsis txhob siv.

5. Yuav ua li cas teeb tsa 95% cawv rau 75% cawv?

1. 100mL ntawm 95% cawv muaj 95mL dej cawv thiab 5mL dej. Yuav tsum ntxiv dej ntau npaum li cas los ua kom 75% cawv?

95 % * 100 mL = 75 % * (X+5) mL, X = 121.666666667 mL

Tso 100 mL ntawm 95% cawv rau ib lub khob, thiab tom qab ntawd ntsuas 121.7 mL ntawm cov dej haus mus rau hauv lub khob thiab do kom zoo kom tau 221.7 mL ntawm 75% cawv.

2. Siv npaum li cas 95% haus cawv yuav tsum ua kom 100mL ntawm 75% cawv?

95% * X mL=75% * 100 mL, X=78.947 mL, tus nqi dej ntshiab yog 100-78.947 mL=21.053mL

Ntawd yog, 78.9 mL ntawm 95% cawv yog muab tso rau hauv lub khob cawv, thiab tom qab ntawd 21.1 mL ntawm cov dej distilled yog ntsuas thiab nchuav rau hauv lub khob cij thiab do kom zoo kom tau 100 mL ntawm 75% cawv.