When 1.78 of a certain molecular compound X are dissolved in 85. g Oof g dibenzyl ether ((C,H,CH,),0), the freezing point of the solution is measured to be 0.9 °C. Calculate the molar mass of x.

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When 1.78 g of a certain molecular compound X are dissolved in 85. g of
dibenzyl ether ((C,H;CH,),0), the freezing point of the solution is measured
to be 0.9 °C. Calculate the molar mass of x.
If you need any additional information on dibenzyl ether, use only what
you find in the ALEKS Data resource. Also, be sure your answer has a
unit symbol, and is rounded to the correct number of significant digits.
미
Transcribed Image Text:When 1.78 g of a certain molecular compound X are dissolved in 85. g of dibenzyl ether ((C,H;CH,),0), the freezing point of the solution is measured to be 0.9 °C. Calculate the molar mass of x. If you need any additional information on dibenzyl ether, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. 미
molal freezing point
depression constant
(Kf)
molal boiling point
elevation constant
(К»)
°C-kg-mol1
chemical
formula
melting
point (Tm)
boiling
point (Tp)
name
°C
°C
°C-kg-mol1
acetic acid
CH3CO2H
17.0
117.9
3.63
3.22
benzene
C6H6
5.538
80.08
5.07
2.64
benzonitrile
C6H5CN
-12.82
191
5.35
carbon
disulfide
CS2
-111.7
46.2
2.42
carbon
tetrachloride
CCI4
76.7
5.26
-22.8
cyclohexane
C6H12
6.7
80.7
20.8
2.92
dibenzyl ether
(CGH5CH2)20
1.8
298
6.17
2.2
diethyl ether
CH3CH20CH2CH3
-116.22
34.4
ethanol
CH3CH2OH
-114.14
78.24
1.23
ethylene
glycol
(CH2OH)2
-13.0
197.5
3.11
2.26
formamide
NH2COH
2.57
217
4.25
2.9
hexane
C6H14
-95.27
68.72
2.9
methanol
CH3OH
-97.5
64.5
80.22
218
7.45
naphthalene
C10H8
99.974
1.86
0.513
water
H20
Transcribed Image Text:molal freezing point depression constant (Kf) molal boiling point elevation constant (К») °C-kg-mol1 chemical formula melting point (Tm) boiling point (Tp) name °C °C °C-kg-mol1 acetic acid CH3CO2H 17.0 117.9 3.63 3.22 benzene C6H6 5.538 80.08 5.07 2.64 benzonitrile C6H5CN -12.82 191 5.35 carbon disulfide CS2 -111.7 46.2 2.42 carbon tetrachloride CCI4 76.7 5.26 -22.8 cyclohexane C6H12 6.7 80.7 20.8 2.92 dibenzyl ether (CGH5CH2)20 1.8 298 6.17 2.2 diethyl ether CH3CH20CH2CH3 -116.22 34.4 ethanol CH3CH2OH -114.14 78.24 1.23 ethylene glycol (CH2OH)2 -13.0 197.5 3.11 2.26 formamide NH2COH 2.57 217 4.25 2.9 hexane C6H14 -95.27 68.72 2.9 methanol CH3OH -97.5 64.5 80.22 218 7.45 naphthalene C10H8 99.974 1.86 0.513 water H20
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