Complete the statements by writing the number from the graph.
Temperature vs. Time
The substance is in the gas phase only in region
The substance is in both the liquid and the solid
phase in region )
Temperature (°C)
13
400
360
320
280
240
200
160
120
80
40
0
-40
-80
The substance is in only the liquid phase in region
The melting point is the temperature at region
N
The boiling point is the temperature at region

Answercreating graphs and performing calculations;

Reaction involved in present system is :   c12h22o11 + h2o → 2 c6h12o6the reaction system is obeying following rate law:   rate = k[c12h22o11]thus, it is a first order reaction.now, for 1st order reactionrate constant (k) =  given: initial conc. = 3.0 g, final conc. = 2.7 g, t = 2.5 h∴rate constant (k) =  ∴ k = 0.04215 h-1now, for 1st order reaction, half life = 0.693/k = 0.693/0.04215 = 16.4 hthus correct answer is option b

Sorrr but idk whats its abou 9

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