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At a flea market, you've found a very interesting painting done in the style of Rembrandt's "dark period" (1642-1672). You suspect that you really do not have a genuine Rembrandt, but you take it to the local university for testing. Living wood shows a carbon-14 activity of 15.3 counts per minute per gram. Your painting showed a carbon-14 activity of 15.1 counts per minute per gram. Could it be a genuine Rembrandt?
At 50 °C the system acetone(1) and chloroform(2) forms an azeotrope with composition x1 = 0.416. What is the pressure at the azeotropic composition at 50 °C?
Calculate the excess enthalpy of mixing for a solution that contains 60% by mol hydrazine at 20 °C.
A natural rubber compounded is proposed for a bushing application. Stress analysis indicates that the structure requires a tensile modulus of 5 Mpa. In terms of percentage, how much dicumyl peroxide must be used in the compound to achieve the desired..
A Rankine power plant using steam operates between pressures 60 bar and 1.013 bar. The turbine expands steam from 500 °C, 60 bar, to 1.013 bar. The liquid at the exit of the condenser is saturated. The efficiency of the turbine and of the pump is ..
If the excitation is adjusted such that the magnitudes of the excitation voltage and the terminal voltage are equal, and if the motor is taking 20 A, find the torque developed.
Write a comprehensive report on your selection of the form of corrosion - Discerption of the corrosion form.
Water at 1 bar, 20 °C is heated at const P to produce steam with quality 95%. What is the amount of heat? What is the final state if the amount of heat is 2100 kJ/kg?
Assuming the unknown acid has one acidic proton per molecule, what is the molecular formula of the unknown acid? Explain how you arrived at your answer.
Design a suitable sieve plate for conditions below the feed point. Equilibrium data for the system ethanol-water, at 760 mmHg, mol fractions ethanol:
find the voltage and power at the sending end and the voltage regulation.
The bulbs, which arestirred and of equal volume, initially contain binary gas mixtures of different compositions.At time zero, the valve is opened; at time t, the valve is closed, and the bulkcontents are analyzed. Explain how this information can..
Determine the synchronous speed in revolutions per minute and the useful torque in new ton meters of a 200-hp, 60-Hz, six-pole synchronous motor operating at its rated full load (1 hp ≅ 746 W).
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