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- Which diagram(s) O 1. II and III only 2. All of these О3. I only O 4. III only I II O 5. I and III only O 6. I and II only O 7. II only 8. None of these III best characterize(s) a pure substance that is a compound?Which statement about isotherms of a cubic EOS is/are FALSE? I. At Tr = 1.0 and any pressure, the first and second derivatives of P with respect to V will both be equal to zero.II. When Tr < 0 the substance is always a VLE mixture inside the pressure dome. a.Neither I nor II b.Both I and II c.I only d.II only120 g of oxygen gas, in the form of O2, is initially at a temperature of 12.00 C. If the gas occupies a volume of 100 L, what is the pressure of the gas? (The atomic weight of oxygen is 16.0 g/mole, and R = 8.31 J/mole- K.) a. 3.74 kPa b. 88.8 kPa c. 22.5 kPa d. 63.0 kPa e. 101 kPa
- 3. Solid molecular hydrogen. For H₂ one finds from measurements on the gas that the Lennard-Jones parameters are & = 50×10-¹6 erg_and o = 2.96 Å. Find the cohesive energy in kJ per mole of H₂; do the calculation for an fcc structure. Treat each H₂ molecule as a sphere. The observed value of the cohesive energy is 0.751 kJ/mol., much less than we calculated, so that quantum corrections must be very important.II. Statement Analysis. Read and analyze the following problems. Choose the correct letter corresponding to your answers Choose: A - if statement I is TRUE, but statement Il is FALSE B- if statement I is FALSE, but statement II is TRUE C- both statements are TRUE D- both statements are FALSE I Krypton gas (Kr) has a greater average molecular speed than methane gas (CH4) at 25 degrees Celsius. In a container containing a mixture of O2 and He gas, if there is a small hole on the side of the container, O2 is lost faster than He.1. Consider n moles of gas. If you are to include the finite volume b of a mole, how should you write the equation of state based on the ideal gas equation given that the pressure is p, the volume is V and the temperature is T? A. p(V – b) = nRT B. (p/b)V = nRT C. p(V – nb) = nRT D. bpV = nRT 2. A monoatomic ideal gas un- dergoes several thermodynamic processes as shown in the given pV diagram. Process A → B is an isochoric process while process B → C is an isothermal process. What is the associated work to this series of processes? A. -2.75 (k.J] p (Pa) 12.5 X10ʻ- A 7.50 X10 B C B. –0.75 [k.] C. +0.75 [kJ] V(m²) 0.040 0.100 D. +2.75 (k.J) 3. In the pV diagram provided, we have an isobaric process (process ab), an isochoric process (pro- cess bc), and an arbitrary process (process ac). Using the provided values in the table and assuming we have an ideal gas, what is Qac? P2 TQab = 150 [J] (into the system) Qbe = 66 [J] (out of the system) Pi = 14 x 10" (Pa] 2 = 20 x 10* (Pa] V = 3 x…
- Multiple Choice: The average volume of a human breath is roughly 500 mL. How many moles do you inhale with each breath on a day when the temperature hovers near freezing? Assuming that human exhalations eventually intermix evenly throughout the approximately 3 × 10(exponent 22) L of Earth’s atmosphere, how many particles of air is in each breath? a. 20 particles b. 10 particles c. Avogadro's constant number of particles d. 100 particles7. If I have an unknown quantity of gas held at a temperature of 1195 K in a container with a volume of 25 liters and a pressure of 560 atm, how many moles of a. 143.0mol gas do I have? d. 0.3457mol b. 0.01004mol C. 146.0mol 8. If I have 21 males of g3s held at aIpecac syrup contains the equivalent of 32 grains of ipecac in each fluidounce of the syrup. How many milligrams of Ipecac is contained in 30 mL of the syrup? O a. 2080 mg O b.208 mg OC 2.08 mg O d.0.208 mg O e. 20800 mg
- 4. GO A certain element has a mass per mole of 196.967 g/mol. What is the mass of a single atom in (a) atomic mass units and (b) kilograms? (c) How many moles of atoms are in a 285-g sample?Which of the following terms is generally referred to both liquids and gases? A. colloid B. fluid A BCD C. molecule D. quantum O O O O 2. Which term is used to describe the ratio between mass (m) and volume (V) of a fluid? A. density B. pressure C. specific volume D. specific weight O 00 O 3. Who among the following is not a property of fluids? C. specific volume A. specific force B. specific gravity D. viscosity O O O 0 4. What is being measured by temperature? A. average kinetic energy B. colloidal collision C. fluid expansion D. potential energy O O O O 5. What is the reciprocal of density? A. specific force B. specific gravity C. specific volume D. viscosity OO 0 06. What happens to the kinetic energy of fluids when the temperature increases? A. The kinetic energy will increase. B. The kinetic energy will decrease by one half. C. The kinetic energy will be converted into potential energy. D. The average kinetic energy of fluid remains the same despite of the change in temperature.…1%V. Ii. O P 11:0M The result of (j x k) · (k × î) is O a. j O b. i O c. 0 O d. 1 O e. k
