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A water sample contains the following impurities per litre
Ca(HCO3)2= 81 mg Mg(HCO3)2=73 mg, CaSo4=68,MgSo4=60mg KCl= 100mg.
Calculate the quantity of lime and soda required in kg for softening 50000 litres of water if the purity of lime and soda are 80% and 90% repectively at wt. Mg=24, S=32, C=12, N=14, O=16, Cl=35.5, Ca=40
a. What alarms would you add to the vaporizer control scheme shown in Figure? Indicate whether the alarm would signal high or low conditions, what the alarm would signify, and what operator response would be required in each case.
what is the composition of the system at equilibrium? What would be the effect of reducing the pressure to 1 bar? Assume ideal gases.
For parts c and d, compare with the saturated molar volumes reported in the NIST Web Book.
Steam at 2700 kPa and with a quality of 0.90 undergoes a reversible, adiabatic expansion in a nonflow process to 400 Ha. It is then heated at constant volume until it is saturated vapor. Determine Q and W for the process.
a. Estimate the feed flow rates of glycine and guaiacol that would be needed to produce 100 kg/day of the API. b. Estimate how much product is lost in the thin-film evaporator.
It is 53.66% C and 4.09% H by mass. A titration required 18.02 mL of 0.0406 MNaOH to neutralize 0.3602 g carminic acid. Assuming that there is only one acidic hydrogen per molecule, what is the molecular formula of carminic acid?
adsorption and membrane processeszeolites are used to adsorb a wide range of solutes from vapour and gas streams. what
Consider an engine that operates at a low temperature of 25C and a higher temperature of 432C. Would it be possible to have an efficiency of 65% ?
Which phase (liquid or vapor) remains, and what are its temperature and pressure? How much heat is transferred in the process?
If the power output of the modified Rankine cycle is 1000 kW, what is the isobutane flow rate, the heat-transfer rates in the heater and condenser, and the thermal efficiency of the cycle?
Hydrogen gives off 120. J/g of energy when burned in oxygen, and methane gives off 50. J/g under the same circumstances. If a mixture of 5.0 g of hydrogen and 10. g of methane is burned, and the heat released is transferred to 50.0 g of water at 2..
Include in your comparison an analysis of the technical issues (e.g., battery capacity, weight, and charging circuitry), cost issues, and . practicality issues (e.g., user preferences, potential for misplacement or improper usage of charger, and u..
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