A mixture of saturated liquid water and saturated steam at T = 120 °C has a specific enthalpy of 2000 kJ⁄kg. What is the quality of this mixture?

if you could show how to do it, that'd be great.

how does the Ascorbic Acid Method (SPR) work?

methodology of phosphorus lab (SRP)?

Fractional crystallization produces a pure 1st crop and a less pure 2nd, why does this occur? Explain

A stainless steel manufacturer states, "Aluminum fastening should not be used with stainless steel." could you use stainless steel fastenings with aluminum? Explain.

How to differentiate between condensable and non condesable gases ?
For example we have a process for benzene and methane production be reacting hydrogen and tolune , we would like to find the boiling point for toluene and benzene so the professor considered toulene and benzene as a condensable gases why ?

1. n-Pentane gas goes through an isenthalpic (∆H = 0) process known as throttling. The pentane gas starts at 170 bar and 375 K, and ends at 3.5 bar, where it is partially condensed.

b.) (20 pts) What is the sensible heat released from the initial state to the saturated vapor state at 3.5 bar? Note: at no point in this process is the gas behaving as an ideal gas.

c.) (10 pts) What is the heat of condensation (∆H_cond = -∆H_vap) at the temperature corresponding to a saturation pressure of 3.5 bar?

d.) (10 pts) What fraction of the vapor condenses? Recall, for the process, ∆H = 0.

ans:

B: Hr1=-22.2 kJ/mol; H2r=-1.016 kJ/mol; ∆Hig = -3.384 kJ/mol; ∆H = 1.7822 kJ/mol

C.) ∆Hcond = -23.061 kJ/mol; D.) xL = 0.773;

1. n-Pentane gas goes through an isenthalpic (∆H = 0) process known as throttling. The pentane gas starts at 170 bar and 375 K, and ends at 3.5 bar, where it is partially condensed.

b.) (20 pts) What is the sensible heat released from the initial state to the saturated vapor state at 3.5 bar? Note: at no point in this process is the gas behaving as an ideal gas.

c.) (10 pts) What is the heat of condensation (∆H_cond = -∆H_vap) at the temperature corresponding to a saturation pressure of 3.5 bar?

d.) (10 pts) What fraction of the vapor condenses? Recall, for the process, ∆H = 0.

ans:

B: Hr1=-22.2 kJ/mol; H2r=-1.016 kJ/mol; ∆Hig = -3.384 kJ/mol; ∆H = 1.7822 kJ/mol

C.) ∆Hcond = -23.061 kJ/mol; D.) xL = 0.773;

how does the Biochemical Oxygen Demand method work?

A hydrocarbon feed consisting of a mixture of propane (20%), isobutene (30%), isopentane (20%), and n-pentane (30%) is fractionated at a rate of 100 kg/h into a distillate that contains all the propane and 78% of the isopentane in the feed. The mole fraction of isobutane in the distillate is 0.378. The bottom stream contains all the n-pentane fed to the unit. Determine the flow rate of the bottom stream. provide a flow chart with component and mass of each inlet and outlet

derive the expressions for the thermodynamic properties Helmholtz free energy, entropy, pressure, chemical potential and internal energy for the canonical ensemble as a function of the partition function

The following shows the gas phase decomposition of hydrogen peroxide (H2O2) at 400 °C: 2H2O2(g)2H2O(g) + O2(g)

This reaction is second order in H2O2 with a rate constant of 0.650 M-1s-1 and the initial concentration of H2O2 is 0.600 M.
a) What is the concentration of H2O2 after 40 second? (extra credit) What is the concentration of O2

at that time?
b) Calculate the first and second half-life of this reaction. Are the values same or different?

Explain your answer.

What type of defects and how many are likely to be created when 1.5 moles of NiO are added to 97.5 moles of SiO2?

The structure of NaCl is given. Determine its lattice constant, a, and its density. Hint: since NaCl is ionic use the ion radius data and the atomic radii.