Answer:
Combining the two clear colorless liquids is a chemical change.
Explanation:
Because a different solid substance is formed. Tell students that a precipitate is an insoluble solid that forms when two solutions are combined and react chemically. Insoluble means that the solid will not dissolve.
A toxicity is answer for that question
Answer: 58.305torr
Explanation:
We shall solve this using Raoult law.
Mathematical expression is;
Ptotal=XaPa + XbPb
Where Xa, Xb and Pa Pb are the mole fraction and vapor pressure of each component. we shall now solve this by steps
STEP1: Find the mole of benzene and Toluene;
Mole= mass÷molar mass
For toluene:
Mass= 398g
Molar mass= 92.1g/mol
Mole= 398÷92.1 =4.32mol
For benzene:
Mass=734g
Molar mass= 78.1g/mol
Mole= 734÷78.1 = 9.398mol
STEP2: Find the mole fraction of each component:
Let Xb be mole fraction for benzene
Let Xt be mole fraction for toluene.
Therefore; nB+nT = X
nB and nT are the mole of component B and T
X= 4.32+9.398= 13.718
Mole fraction for Toluene;
Xt= nT÷X
4.32÷13.718= 0.315
Mole fraction for benzene;
Xb= nB÷X
9.398÷13.718= 0.685
STEP3: Find the total total pressure;
We will use Rauolt law.
Ptotal= XbPb + XtPt
Pt = 22torr
Pb = 75torr
Therefore Ptotal is;
(0.315×22) + (0.685×75) = 6.93+51.375= 58.305
Therefore the total pressure is 58.305torr
Plants can reproduce through either sexual or asexual means. Sexual reproduction involves pollination helped by wind and or insects. Asexual reproduction involves tubers, bulbs and runners known as rhizomes and stolons as well as cuttings taken by humans.