For which process is ΔS negative? (a)evaporation of 1 mol of CCl4(l) (b)mixing 5 mL ethanol with 25 mL water (c)compressing 1 mol Ne at constant temperature from 1.5 L to 0.5 L (d)raising the temperature of 100 g Cu from 275 K to 295 K (e)grinding a large crystal of KCl to powder

Q: Brine is solution-mined from a salt deposit by pumping fresh water into the salt deposit, dissolving…

A: Given:The pump is at 0 ft elevation relative to the gradeThe level in the brine tank is 20 ft above…

Q: 30. Examine the nanoscale diagrams and the phase diagram below. Match each particulate diagram (1…

A: Nanoscale diagrams of a substance are given and they are to be matched with the corresponding phases…

Q: Since NH3 gas does not dissolve at a boundary, it diffuses in N2, which does not spread. Total…

A: Total pressure PT = 1013 × 105 Pa Temperature T = 298 K Partial pressure of NH3 PA1 = 1333 × 104 Pa…

Q: 1. Draw an appropriate process path diagram for the chemical systems undergoing temperature and…

A: Step 1: Case 1:  Step 2:  Step 3: Case 2:  Step 4:

Q: What is the percent purity of the obtained crystal after one recrystallization?

A: For solubility of A, the amount recovered in grams is estimated. For solubility of B, the amount…

Q: At -12° Fa gas occupies a volume of 40,000 cm. If the temperature rises up to 16 ° C, calculate the…

A: Let us assume that the pressure and the amount of gas are held constant, We know that , the volume…

Q: A rectification column is fed 100 kmol/h of a mixture of 50 mol% benzene and 50 mol% toluene at…

A:

Q: O Flash Distillation (or Single-Stage Contact) A mixture of 60 mole % n-heptane and 40 mole %…

A: A mixture of two hydrocarbons is flashed vaporized.

Q: An industrial chemist is studying small organic compounds for their potential use as an automobile…

A: Given, Volume of water=25 mL density of water=1 g/mL So, mass of water =density×volume mass of water…

Q: What units must the constant 0.644 have? 2.What should be the value of the constant when all units…

A: The correlation for calculation of heat transfer coefficient for forced convection in laminar flow…

Q: a) Describe octane number b) Butanes is one of the low boiling products present in crude oils and…

A: Answer a) The octane number (ON) is describe as knock resistance of gasoline. The Octane number is…

Q: The following graph shows the T-x pressure phase diagram atmospheric for a Pt / Au alloy: T (°C)…

A: This is a binary system phase diagram and if Pressure is fixed we have two degrees of freedom. If we…

Q: Gaseous molecules can quickly spread throughout a room. Graham's Law states that rate of effusion…

A: Graham's law of effusion states that the rates of effusion of two different gases vary inversely  as…

Q: An alloy containing 30 down under equilibriur temperature. Determi eutectic phases in the

A:

Q: a) Why does the boiling point increase and freezing point decrease of a solution when compared to…

A: When a solute is dissolved in a solvent, the solute particles interact with the solvent particles.…

Q: The intrinsic viscosity of a sample of poly(methyl methacrylate) is 22.04 cm3g-1 in toluene at 25°C…

A: Given Intrinsic viscosity of a sample of poly(methyl methacrylate),η= 22.04 cm3g-1 in toluene at…

Q: Beginning at point X trace out the lines for one theoretical plate. What is the composition of the…

A: Given data: Temperature-composition (T,x-y) diagram of compounds An and B is given.

Q: c. After distilling this 10 mass% mixture, what will be the composition of the resulting condensate?…

A: after heating 10 mass% mixture upto its bubble point=94∘Cwe will daw a horizontal line from this…

Q: b) Silicon nitride is a very hard, high-temperature-resistant ceramic used as a component of turbine…

A: Given: 3 Si + 2 N2 ----> Si3N4 2 g of Si 1.50 g of N2 Which is the limiting reactant.

Q: 2. At 25°C the surface tension of benzene is 28.9 mN/m and its molar volume is 89.2 cm³/mol.…

A: Given Data :At 25 degree C the surface tension of benzene is  Molar volume of benzene((Vm)) is  -…

Q: C. Calculate the total enthalpy change using the Hess' Law. 2H:0 2H2 + O: +572 KJ/mol 2HF H2 + F:…

A:

Q: The normal melting point of benzene, C6H6, is 5.5°C. For the process of melting, what is the sign of…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: (i) The amount of CO₂ being removed from the gas stream. (ii) The composition of gas leaving the…

A: Answer.

Q: The following information is given for water at latm: boiling point = 100 °C AHvap(100 °C) = 40.7…

A:

Q: Considering the very slow cooling (i.e. equilibriumcooling) of a 1.5 wt% C alloy; a) Draw schematic…

A:

Q: A triple effect evaporator concentrates a sugar solution from 12% sugar to 60% sugar. Assuming that…

A: To Find :             Composition of products leaving each effect. Here, Triple effect evaporator is…

Q: An electron in a hydrogen atom is excited from the ground state to the n = 3 state. True or false?…

A: Given that  an electron in a hydrogen atom  from ground state to n= 3 state      According to…

Q: A solution of sucrose (molecular weight = 342) is prepared by dissolving 68.4 g of %3D it in 1000 g…

A: Given, Weight of solute, W1=68.4 g weight of solvent,W2=1000 g the molecular mass of…

Q: A continues fractionation column, operation at atmospheric pressure, is to be designed to separate a…

A: Given : A mixture of CS2 and CCl4 is separated in a distillation column.Mixture containing Overhead…

Q: Describe the substance at 100°C No partial credit. (Hint: each gridline upwards is 5°C) Show Your…

A: Melting is a physical process that results in the phase transition of a substance from a solid to a…

Q: Solubility (g solute/100ml solvent) 90 80 70 60 50 30 20 10 0 1Graph 1: Solubility Curves for KCI…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Principal Quantities and EOS

A physical quantity represents the physical state of a system. It is expressed as the product of a number and unit. The basic quantities used in science are length, mass, and time. The principal quantities are the quantities that are independent of other quantities.