15. An empty flask has a mass of 48.293g and 48.612g when filled with acetone vapor at 80°C and 728mmHg. If the volume of the flask is 227.2mL, what is the molecular weight of the acetone? a. 43.7497kg/kmol b. 38.6978kg/kmol c. 42.4760kg/kmol d. 43.8075kg/kmol

15. An empty flask has a mass of 48.293g and 48.612g when filled with acetone vapor at 80°C and 728mmHg. If the volume of the flask is 227.2mL, what is the molecular weight of the acetone? a. 43.7497kg/kmol b. 38.6978kg/kmol c. 42.4760kg/kmol d. 43.8075kg/kmol

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Thermodynamic Relations

Thermodynamics is the division of physics that deals with the transfer of any kind of energy, whether it be heat, temperature, or work, from one object to another.

Question

can you show me how did it get the universal gas constant (R)?

15. An empty flask has a mass of 48.293g and 48.612g
when filled with acetone vapor at 80°C and 728mmHg. If
the volume of the flask is 227.2mL, what is the molecular
weight of the acetone?
a. 43.7497kg/kmol
b. 38.6978kg/kmol
c. 42.4760kg/kmol
d. 43.8075kg/kmol

Salut ion:
ma88 (m)= 0• 000 319 kg
P = 720 mm Hg = 97.0587 KPa
T=
353.15 K
V = 0.227 2 L = 0.0002272 m3
univessal Gas Constant (R) = 0.134 K8/Kmol k
%3D
we know that,
PV = nRT
(n+ moles)
%3D
97.0507X00002272= nx8.314 X353·15
On Balving,

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