A 30-liter volume of gas at 25 degrees C contains 12 g of methane (CH4), 1 g of nitrogen (N2), and 15 g of carbon dioxide (CO2). Calculate (a) the moles of each gas present, (b) the partial pressure exerted by each gas, and (c) the total pressure exerted by.
1) Suppose you have 1 liter of a solution thats 60% hydrogen chloride (HCl), i.e. a 50 % solution of hydrochloric acid. Calculate the amount of pure water you have to add to get the following concentrations. HCl concentrations 50%, 40%, 30%, and 20%.
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1, Carbon dioxide is heated to 2800 K at a constant pressure of 2 atm and dissociates to the following reaction: CO2 arrow CO+1/2O2 Determine the equilibrium composition where CO2, CO, and O2 are simultaneously present.
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3.18 A two-phase liquid-vapor mixture of ammonia has a specific volume of 1.0 ft^3/lb. Determine the quality if the temperature is (a) 100 degree F, (b) 0 degree F. Locate the states on a sketch of the T-v diagram..
What kind of microstructure would you observe if you cut a small section from a cast-iron skillet and investigate? How do you compare this microstructure with that of a rotor of an automobile disk brake and a hub of a machine that undergoes fatigue loading? Refer to the microstructures below..
We want to produce an NaCl solution. At time t=0, there is 100 kg of pure water in a mixer. Starting from t=0, water is added to the mixer at a rate of 150 kg/h, and solid NaCl is added at 30 kg/h. The produced solution flows out of the.
Write the chemical formulas for the following chlorofluorocarbons or substitutes. Also identify them as a chlorofluorocarbon, hydrofluorocarbon, hydrofluorochloracarbon, or fluorocarbon. 12 152 132 116.
0.5 kg of helium is in a piston cylinder. Initial volume of the helium is 4 m^3. It is then compressed to 2 m^3 while it's pressure is constant at 180 kPa. Find the initial and final temperatures of the helium and the work required to compress it (kJ).
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We know that the molar concentration and volume of a solution is the sum of the product of the molar concentration and volume of each solution component before mixing: M1V1 = M2V2 + M3V3. Using the information below, calculate the final molar concentration of the mixture (M1) with units of.
6. Based on ionic charge and ionic radaii given in Table 12.3, the predicted coordination number for nickel atoms in NiO would be: a) 2 b) 4 c) 6 d) 8.
You have a 100 mg/mL stock solution protein. To make 100 mL of 2mg/mL solution, add of stock then add of water to make a final volume of mL. You have a 100 mg/mL stock solution of protein. To make 1 mL of 2mg/mL solution, add of stock then add.
You need to make a 2% solution of sodium hydroxide for lab which requires 2 grams sodium
hydroxide in 100 milliliters of water. How many grams of sodium hydroxide are needed to
make a 650 milliliter solution? (Units: milliliters = mL; grams = g).
The directions for mixing an insect spray say to use 2 1/2 ounces of chemical in each gallon of water. How many ounces of chemical should be mixed with 3 2/3 gallons of water?
First, estimate the answer to the application problem.
Then find.
What is the vapor pressure of carbon dioxide in the bottle before it is opened (i.e., when it is at equilibrium) assuming no other ions are present besides those related to CO2 and water? If one were to use compressed air (at 400 ppm CO2(g)) to provide carbonation to the.
4 kg of water, initially a saturated vapor at 75 kPa, is cooled to a saturated liquid while the pressure is maintained constant. Determine the work and heat transfer for the process (kJ). Show heat transfer equals the change in ethalpy of the water..
Wastewater from a winery contains approximately 1.8 g/L glucose (C6H12O6), 1.8 g/L fructose (C6H12O6) and 250 mg/L acetic acid (CH3COOH). What would be the BOD5 and ultimate BOD assuming the first order rate constant is 0.23 d-1 (base e)?
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You open a 16 oz (1 pint) bottle of a carbonated soft drink that has a temperature of 5C, then you get distracted and forget to drink it. You come back quite some time later and find that it has gone flat, and that it has gotten warm (20C). Before.
thermo (5). (12 points) Specific Volume.
(5a). (6p) A rigid tank with a volume of 0.25 m3 contains 2.5 kg of H2O at 450 kPa. Determine the phase (or phases), quality, temperature, total internal energy and total enthalpy.
(5b). (6p) A rigid tank with.
3. Liquid water enters a heat exchanger, operating at steady state, at T1 = 305 K and exits at T2 = 315K. A separate stream of air (ideal gas) at T3 = 790 K enters at a mass flow rate of 0.5 kg/s and exits at T4 = 750 K..
A 1000 MW (electrical) power plant exhausts 5700 moles/s of CO_2. In class, we allowed the CO_2 to enter the atmosphere and then calculated the minimum work to remove it from the atmosphere. Suppose that we instead perform the separation before the flue gas is released. In that case the.
5. Groundwater in Taupe, Arizona, initially contains 1.8 mg/L of iron(III). What must the pH be raised to in order to precipitate 0.3 mg/L of the iron? (T=25C)
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Weight of a porous sample is 325 g when wet and 315 g when dry. The sample in the suspended condition weighs 200 g. Apparent porosity for this sample is {(W_w - W_d)/(W_w - W_s)} times 100 12% 30% 20% 10% Bulk density in the previous question is [B =.
The following data was obtained at an asbestos site. Using the information given in the table below, determine whether the contractor can be released or held accountable for the amount of asbestos released at the work site. (Assume 95 percentile) The efficiency of a filter used in the duct supplying.
6. Number of monomer molecules which take part in polymerization is
a) Degree of polymerization
b) Molecular weight of polymer
c) Tg of polymer
d) None of the above.
5. Monosaccharides can be modified through the addition of a(n) forming a(n) amine: peptide bond E amine; N-glycolytic bond alcohol glycosidic bond D phosphoryl group; para-glycosidic bond E) ketone; hemiketal 6. Which of the following isTRUE about two monosaccharides linked together? They form a disaccharide. B) They contain two glycosidic.
6. A tank contains 100 gal of pure water. A salt solution with concentration 3 lb/gal enters
the tank at a rate of 2 gal/min. Solution drains from the tank at a rate of 2 gal/min.
Sketch a picture of this situation, then without.
1. Ferrite is a solid solution of carbon in iron, stable at room temperature. Which of the following statements is correct? Select one answer.
A) Carbon atoms occupy positions interstitial in ferrite.
B) Carbon atoms occupy substitutional positions in ferrite.
C).
Use the following Fe-Fe3C phase diagram to answer questions 6-10 Steel containing 0.5% C is classified as Hypoeutectic Hypereutectic Hypoeutectoid Hypereutecoid Maximum solubility of Carbon in alpha-ferrite is .0.77%C 2.11%C 0.0218% C 2.11%C What phases) are present at 728 degree C for AISI steel 1040 (0.40%C) alpha-ferrite gamma-austenite both alpha-ferrite.
1- If a concrete mixture is proportioned with a cementitious content of 611 lbs/yd3 and
specifications limit the w/c ratio to a maximum of 0.40, determine the maximum
allowable water content per cubic yard
2. Given the following information, calculate the.
The addition of a boron (B) impurity to otherwise pure silicon (Si) will
a) decrease conductivity due to additional scattering of electrons due to the impurity
b)create an additional allowable energy level inside the band-gap called an acceptor level
c)create an.
Three polymers are available, with the composition shown below. It is desired to form a polymer blend that contains 30% of (CH4)x, 30% of (C2H6)x, and 40% of (C3H8)x.
A) Determine the percentages of compounds A, B, and C to achieve the target blend.
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1: A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.3 cross 102 µm. Find this earthquake's magnitude. (Round your answer to one decimal place.)
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1) Briefly describe the 5 major classes of materials. Summarize the nature of the crysalline structure for each class ?
2) Find the planer desity of atoms in the ( 1 1 1) plane germanium ?
3) what is meant by the heat of.
10 g of water (H2O) is contained in a cylinder with a weighted floating top, which keeps the water at a constant pressure of 200 kPa. If the water is a saturated liquid (x = 0), what is the volume of the water? What is the temperature of the water?
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1) Consider a steel alloy containing 0.95 wt% carbon. What is the proeutectoid phase when
cooled to below 727C?
(a) pearlite
(b) austenite
(c) ferrite
(d) cementite
2) Which material does NOT.
What would you predict would result from adding a small amount of nitrogen (called doping) to an otherwise pure silicon material? .
a) The nitrogen impurity will increase resistivity .
b) Nitrogen will create vacancies that will decrease resistivity .
c).
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