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Calculate the molarity of each of these solutions.
a. A 5.623-g sample of NaHCO3 is dissolved in enough water to make 250.0 mL of solution.
b. A 184.6-mg sample of K2Cr2O7 is dissolved in enough water to make 500.0 mL of solution.
c. A 0.1025-g sample of copper metal is dissolved in 35 mL of concentrated HNO3 to form Cu2 ions and then water is added to make a total volume of 200.0 mL
A 230-V, single-phase, 60-Hz source supplies two loads in parallel. One draws 10 kVA at a lagging power factor of 0.80 and the other draws 6 kW at a lagging power factor of 0.90. Compute the source current.
determine which heat exchanger is cheaper by comparing the capitalized costs.
Determine the location and the value of the point charge.
Three single-phase 100-kVA, 2400:240-V, 60-Hz transformers (each of which has an equivalent series impedance of 0.045+j0.16 Ω referred to its low-voltage side) are connected to form a three phase, 4160:240-V transformer bank, which in turn is conn..
Find the total core loss if the frequency is increased to 400 Hz.
A W12x22 structural steel wide-flange section of ASTM A36 steel is used as an axially loaded column. Find the allowable axial compressive load using Euler's formula and a factor of safety of 2.0. The column is pin connected at both ends and is 15 ..
The reaction between oxygen and organic material is a/an __________ reaction. 1. exothermic 2. endothermic 3. biochemical 4. photochemical
describe the principles of a vapour adsorption refrigeration system and compare this to a vapour recompression system.
Carbon monoxide (CO) is burnt in presence of 200% excess pure oxygen and the flame temperature achieved is 2298 K. The inlet streams are at 25 °C.
determine the force and the power required to overcome the skin friction.the ship is travelling in sea water(density1020kg/m^3) and at a speed of 24km/hr
The fluoride mixture is then enriched through a multistage diffusion process to produce a 3% 235U nuclear fuel. The diffusion process utilizes Graham's law of effusion (see Chapter 5, Section 5.7). Explain how Graham's law of effusion allows natur..
calculate the quantity of gas taken out of the cylinder if the final pressure is 2.5 * 10^6 N / m^2.
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