Assignment III_2017-2018.pdf - CHEM 1380A&B Basic Chemistry...

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1 CHEM 1380A&B: Basic Chemistry for Engineers Assignment III (2017 – 2018) Section A: 1. In ideal gas equation calculations, expressing pressure in Pascals (Pa), necessitates the use of the gas constant, R, equal to __________. A) 0.08206 atm L mol -1 K -1 B) 8.314 J mol -1 K -1 C) 62.36 L torr mol -1 K -1 D) 1.987 cal mol -1 K -1 E) none of the above 2. A gas vessel is attached to an open-end manometer containing a nonvolatile liquid of density 0.791 g/mL as shown below. The difference in heights of the liquid in the two sides of the manometer is 43.4 cm when the atmospheric pressure is 755 mm Hg. Given that the density of mercury is 13.6 g/mL, the pressure of the enclosed gas is __________ atm. 3. Which of the following is not part of the kinetic-molecular theory?
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2 4. Of the following substances, only __________ has London dispersion forces as its only intermolecular force. 5. Of the following, __________ has the highest boiling point. A) N 2 B) Br 2 C) H 2 D) Cl 2 E) O 2 6. What types of intermolecular forces exist between HI and H 2 S?
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