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1.The density of 70.5 wt% aqueous perchloric acid is 1.67 g/mL. a. How many grams of solution are in 1.000 L? b. How many grams of HClO4 are in 1.000 L? c. How many moles of HClO4 are in 1.000 L?
2.How many grams of perchloric acid, HClO4, are contained in 37.6 g of 70.5 wt% aqueous perchloric acid? How many grams of water are in the same solution?
3.Commercial concentrated aqueous ammonia is 28 wt% NH3 and has a density of 0.90 g/mL. What is the molarity of this solution?
determine a) the x, y,z components of that force b) values of angle thetax, thetay, theta z defining the direction of the recoil force. (assume that the x, y, and z axes are directed respectively east, up, and south)
The depth of the water in the flume is 3m. The average velocity is 1.7m/s. Compute the hydraulic energy at the surface of the water and at the bottom of the flume.
What are the differences between airborne infectious diseases and diseases that are caused by air pollution? Give at least two examples for each category of diseases.
Drawdown at an observation well 15 m from the pumped well is 3.0 m, and drawdown at a second observation well 150 m away is 0.30 m. find the hydraulic conductivity of the aquifer.
Determine the length of roadway that is in full superelevation for a four-lane expressway with a 60 mph design speed. The BC of the curve is at station 15+00 and has a minimum allowable radius. The curve delta is 25 degrees and 30’.
The time between truck arrivals at the station is exponentially distributed with a mean arrival rate of 1.5 veh/min. the time it takes vehicles to be weighed is exponentially distributed with a mean rate of 2 veh/min.
A series of small packages, each with a mass of 0.5 kg, are discharged from a conveyor belt. Knowing that the coefficient of static friction between each package and the conveyor belt is 0.4, determine (a) the force exerted by the belt on the package
Water is at 9000 kPa and 300 degrees celcius and flows through a partially open valve. Pressure immediately after the valve is measured to be 600 kPa. Calculate the specific internal energy of the water leaving the valve
An effluent holding pond to be used as part of a spray irrigations system is being built. The holding pond is located 2.5 miles awary for the 10 mgd WWTP which will supply the effluent
a 200ft tape is hung in catenary. It is supported at the 80ft mark the tension is 20lbf and the weight of the tape is 3 lbf 5 0z. The measured distance is 187.01 what it the distance after adjusting for sag
Wastewater flow of 2000 m3/day containing 120g/L of salt. Discharge into a river with a flow of 34,000 m3/day and a salt concentration of 50 mg/l. The agency wants to maintain the salt level to no greater than 250 mg/L downstream of the discharge.
At the inlet the steam is at 1 MPa and 320 C, and leaves the turbine at 20 kPa. The work output of the turbine is measured to be 600 kJ/kg (of steam passing through the turbine).
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