%3Cp%3E%3Cspan%20class%3D%22c1%22%3EA%20student%20following%20the%20procedure%20
ID: 826123 • Letter: #
Question
%3Cp%3E%3Cspan%20class%3D%22c1%22%3EA%20student%20following%20the%20procedure%20of%20this%0Aexperiment%20obtained%20the%20following%20data%20for%20an%20unknown%20volatile%0Aliquid.%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Emass%20of%20the%20flask%2C%20boiling%20stone%2C%20foil%20cap%2C%20and%0Aunknown%2C%20after%20cooling%2C%20g%20%20%26nbsp%3B%26nbsp%3B%2083.350%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Emasss%20of%20flask%2C%20boiling%20stone%2C%20and%20foil%20cap%2C%0Ag%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%0A82.657%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Ewater%20bath%20temperature%2C%0Acelsius%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%0A95.0%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Ebarometic%20pressure%2C%20in%0AHg%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%0A30.09%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Evolume%20of%20flask%20%2C%0AmL%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%0A270%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Eaccepted%20molar%20mass%20of%20unknown%20g%0Amol-1%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%0A86.2%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Ea.%20calculate%20the%20mass%20of%20unknown%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Eb.%20express%20the%20water%20bath%20temperature%20in%0AK%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Ec.%20express%20the%20barometric%20pressure%20in%0Aatmospheres.%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Ed.%20express%20the%20volume%20of%20the%20flask%20in%0Aliters%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Ee.%20calculate%20the%20density%20of%20the%20vaporizated%0Aunknown%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Ef.%20calculate%20the%20molar%20mass%20of%20the%20vaporizated%0Aunknown%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%26nbsp%3B%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3Eg.%20calculate%20the%20percent%20error%20in%20the%0Adetermination%3C%2Fspan%3E%3C%2Fp%3E%0AExplanation / Answer
a) mass of unknown = 83.350 -82.657 = 0.6929 gms
b) water bath temperature = 95+273 = 368K
c)barometric pressure = 30.09/760 atm = 0.0395 atm
d) the volume of the flask = 0.27 litre
e) density of vapourised mixture = 0.6929/0.27 = 2.566 gm/ltr
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