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When measured with a 1.00-cm cell, a 7.50 X 10-5 M solution of species A exhibited absorbances of 0.155 and 0.755 at 475 and 700 nm, respectively. A 4.25 x 10-5) M solution of species B gave absorbanees of 0.702 and 0.091 under the same circumstances. Calculate the concentrations of A and B in solutions that yielded the following absorbance data in a 2.50-em cell:
(a) 0.439 at 475 nm and 1.025 at 700 nm;
(b) 0.662 at 475 nm and 0.815 at 700 nm.
Determine the total mass of nitrogen (N2), in kg, required to inflate all four tires of a vehicle, each to a gage pressure of 180 kPa at a temperature of 25oC. The volume of each tire is 0.6 m^3, and the atmospheric pressure is 1 atm.
ti-6al-4v is a metal alloy use to make biomaterials. its composition is 90 ti 6 al and 4v mass percents. what are the
why is the reynolds number for onest of turbulence given by re gt 2000 in fully flowing pipes and re gt 500 in partly
A heat pump with a coefficient of performance of 3.5 provides energy at an average rate of 70,000 kJ/h to maintain a building at 20C on a day when the outside temperature is -5C. If electricity costs 8.5 cents per kW*h
consider a flow of air in a duct assume standard atmospheric pressure at 5000 ft altitude p12.228psi. at section 1 the
Suggested material and diameter for the shaft. The material must be a shaft-specific steel. All variables required to purchase both gears: d, Pd, N, F, φ, ψ, etc.
You are to supply a design for an engine room crane which will provide maintenance support for the main engine. Your design should include the rails the crane will sit on.
a fossil-fuel steam power plant operates at about 50 of carnot thermal efficiency. it has been suggested that the air
Thermal anemometry is used to determine the mass flow rate of water through a pipe. A wire dissipating heat is installed in the pipe. Upstream of the wire, the temperature is measured to be 20.3 C. Well downstream of the wire, where the fluid is suff..
A ceramic matrix composite contains internal flaws as large as 120 ?m in length. The plane strain fracture toughness of the composite is 45 MP am, and the tensile strength is 550 MPa, assume f=1.0
a residential hot water heater initially contains water at 60c degree celcius someone turns on a shower and draws water
Steady State Thermal analysis can be use to simulate and obtain results to support the design optimization / objectives
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