# 1) Mass of flask, aluminum foil, and rubber band       68.45g           2) Temp.  Of boiling, water    98.20 0C      3) Barometric pressure       755    mmHg     4) Volume of flask (volume of vapor occupies flask)  152 ml     5) Mass of flask, aluminum foil, rubber band, and condensed vapor  68.60g 6) Mass of condensed vapor is (5)-(1)                                                         Find Molecular weight of unknown                                                                                   ______ g / mol     Calculation PV = (m/M)RT) è M = (mRT) / PV = ? Unknown liquid- Based on Molecular weight determine which unknown below has this molecular weight:   Methanol, Ethanol, Isopropanol, Propanol.   UNKNOW IS :  __________________________

Question

1) Mass of flask, aluminum foil, and rubber band       68.45g

2) Temp.  Of boiling, water    98.20 0C

3) Barometric pressure       755    mmHg

5) Mass of flask, aluminum foil, rubber band, and condensed vapor  68.60g

6) Mass of condensed vapor is (5)-(1)

Find Molecular weight of unknown                                                                                   ______ g / mol

Calculation

PV = (m/M)RT) è M = (mRT) / PV = ?

Unknown liquid- Based on Molecular weight determine which unknown below has this molecular weight:

Methanol, Ethanol, Isopropanol, Propanol.

UNKNOW IS :  __________________________