Calculate the ph of 040 m kno2 what is the concentration of
Calculate the pH of 0.40 M KNO2. What is the concentration of HNO2 in the solution
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Two machines and a lighting load are connected in parallel to a 220 V, 60 Hz line. The first machine uses 40 kW of power at 0.81 power factor lagging. The second machine uses 27 kVA at 0.93 power factor leading.
A device used in radiation therapy for cancer contains 1.40 g of cobalt 2760Co (59.9333819 u). Determine the activity of the radioactive material
Three 150 kVA, 480V/4000V,60 Hz single-phase transformers are to be installed on a 4000V, 3-phase line. The exciting current has a value of 0.02 pu. Calculate the line current when the transformers are operating at no-load.
If the semiconductor depicted in the graph below is germanium at room temperature, what is the value of n (the density of electrons in the conduction band) at x=L
A 17 ?F capacitor is charged to 20 V and is then connected across a 11 mH inductor. What is the frequency of oscillation of the circuit
The low-voltage winding of a transformer has 200 turns, and the high-voltage coil has 11,000 turns. The transformer is operated as a step-down transformer, and 13.2KVolts is impressed on the primary side.
Hydrogen iodide decomposes according to the equation 2HI(g) H2(g) + I2(g), for which Kc = 0.0156 at 400ºC. 0.550 mol HI was injected into a 2.00 L reaction vessel at 400ºC. Calculate the concentration of HI at equilibrium.
A three phase Y-connected induction motor operates at 220 volts, has a power factor of 75% and an efficiency of 84% when delivering 8HP. a) what is the current in any one of the phase windings
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