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1- write a) the molecule equation and b)the net ionic equation for the reaction of H2SO4 with NaOH
2- Exactly 25.00 mL of 0.1522M H2SO4 were needed to titrate 45.25mL of NaOH according to the balanced in problem 1 above a)
calculate the moles of NaOH needed for the reaction . b) calculate the molarity of the NaOHsolution
3-one group of students made an error by using HCLinstead of H2SO4 to titrate an unknown solution of NaOH. Would this error change the calculated molarity of the NaOH solution?
Is the second law satisfied? Will this refrigerator still satisfy the second law if its coefficient of performance is 6?
What is the shape of the spectrum of the signal? What is the extent of the spectrum in the frequency domain? What is the unit that is applied to the magnitude of the spectrum?
A plane circular disk of radius 0.25m rotates at a speed of 200 rad/s about an axis through the center of the disk perpendicular to the plane of the disk. There is a uniform magnetic flux B = 1 Tesla parallel to the axis of rotation.
3) What is the RMS voltage of the source in a single loop series circuit if Irms = 1A-30° and Ztotal = 100 65° 4) What is the power dissipated by an electric heater with a resistance of 20? drawing a current waveform of i(t) = 10 sin(60t) Amps
A sensor with a nominal resistance of 50 ? is used in a bridge with R1 = R2 = 100 ?, V = 10.0 V, and R3 = 100 potentiometer. It is necessary to resolve 0.1 changes of the sensor resistance. A) At what value of R3 will the bridge null
The system uses a 7-cell reuse pattern. If the offered traffic per user is 0.03 Erlangs and the average number of calls per hour per user is 1.5, for an Erlang-C system with a probability of delaying a call being 5%, calculate the traffic load per..
Design a hand warmer with a heated element consisting of an encapsulated resistor to be held in your hand and powered by a 6V battery that you put in your coat pocket. Use 26 gauge wire to connect the resistor to the battery.
A box contains a shipment of N (N>4) computer chips, of which four are defective. Four chips are randomly selected and examined as to wether or not the chips are defective. Describe the sample space for this experiment.
What is the primary purpose of a resistor in series with a LED being driven by a flip-flop?
Calculate the S/N ratio for a receiver output of 4 V signal and 0.48 V noise both as a ratio and in decibel form. (69.44, 18.42dB)
Suppose the z=0 plane carries a sheet current K=5. A/m x. Then a 1 m long rod exists above the current sheet and has velocity u. Find the Vemf when the rod is parallel with the x-axis, u= 2(m/s) y.
A silica fiber has an outer diameter of 125 micro meter. What is the total volume of silica for a 1-km length? This fiber is wound on a spool whose unloaded diameter is 20 em. The spool height is 10 em. Compute the diameter of the fully loaded spo..
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