DATA:

Trial-1 pure naphthalene

Mass of Naphthalene = 5.2149 g

Time (Sec)	Temperature
0	95.0C
15	83.3C
30	80.3C
45	79.7C
60	79.6C
75	79.2C
90	79.0C
105	78.5C
120	78.0C
135	77.2C

Trial 2 pure naphthelene

Time (sec)	Temperature
0	95.7C
15	83.4C
30	79.6C
45	79.5C
60	79.2C
75	79.1C
90	78.8C
105	78.4C
120	78.1C
135	77.6C

Part 2

Unknown No = 3

Mass of unknown no = 0.5651 g

Trial 1 mixture with unknown compound

Time ( Sec)	Temperature
0	95.0C
15	85.0C
30	78.3C
45	74.9C
60	74.3C
75	73.3C
90	73.1C
105	72.6C
120	72.1C
135	71.5C
150	70.2C

Kf (Naphthalene) = 6.94 degree celcius/molal.

determine the molar mass and identity of an unknown compound by measuringthe depression in freezing point. In this experiment, we will first measure the freezing point of pure naphthalene, thenmeasure the freezing point again after mixing in an unknown solute.From the decrease in freezing point of the mixture versuspurenaphthalene,themolarmassoftheunknownwill be determined. PossibleUnknownswould be ( p-dichlorobenzene,benzophenone,benzyl). find the percet error.

Graphs	/12	Fourgraphsincludedwhichfollowthe guidelinesfromthelabmanual
Interpretationofgraphs	/4	On or near each graph, the freezing point is correctly identified.Averagefreezingpointsfornaphthaleneandmixtureareprovided.

please give me answer and calculation and graph also. molar mass of the unknown compound, moles of solute. ASAP please