Saing a solublay Leative IS IT A SATURATED, UNSATURATED OR SUPERSATURATED SOLUTION?
Dissolved in 100 grams of water
Solubility Curve for KNO
50 grams of KNO3 at 3000
150
140
130
saturated
supersaturated
120
110
100
"saturated
100 grams of KNO, at 40°C
8
Solubility Corams of solute/100g H)
양 경영
O
50
unsaturated
40
60 grams
F KNOat 50°C
20
O
10
00100
0 10 20 30 40 50 60 70
Temperature (°C)

your answer is c) plasma

~*"auba14"*~

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.

answer;

18.5 seconds

explanation;

velocity is distance covered per unit time; it is given by displacement divided by time.

thus; time = displacement/velocity

total time = total displacement/velocity

total distance = 5000 meters south

total time = 5000/4.5

                  = 1111.11 seconds

but; 1 minute = 60 sec

thus; 1111.11 /60

                = 18.51 seconds

thus; the time taken is 18.5 seconds