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An adult of 86.0 kg employs a spiral staircase to climb to the second floor of his house, his gravitational potential energy rises by 1.70 x 103 Joules. Determine by how much does the potential ener
Describe the work for the compression of CO2 gas from 3.0 to 1.5 liters against a pressure of 2.0 atm at constant temperature.
The decomposition of N2O5 in CCl4 is a first-order reaction. Describe the value of the rate constant, k if 2.56 mg of N2O5 is present initially, and 2.50 mg is present after 4.26 min at 55degrees
The element tungsten freezes at 3422 degrees C, and its molar enthalpy of fusion is ΔH fus=35.2 kJ/mol Discuss when the molten tungsten solidifies to the tungsten at its normal melting point, is
Consider the Earth and a cloud layer of 900 m above the planet to be the plates of a parallel-plate capacitor.
Determine the de Broglie wavelength of one of these alpha particles. Alpha particles emitted from the radioactive radium have energy of 4.8 MeV.
Discuss at what radius in the Angstroms does the probability of finding an electron at a point in the ground state H atom fall to 80 per cent of its maximum value?
To that mixture, suppose you add AgNO3(s) and mix well. Calculate what changes would take place. Suppose that you began with an aqueous solution of CoCl2.6H2O, to which you add 12 M HCl until the so
Discuss what effect does an increasing concentration of Na2O have on the flow properties of a silica-based glass? When a glass modifier like Na2O is added to SiO2, does the oxygen: silicon ratio inc
The plane is headed due south with the air speed of 192 mph. The wind from the direction of 78.0 degrees is blowing at 23 mph. Determine groundspeed and resulting bearing of plane.
A skier slides horizontally all along the snow for a distance of 13.0 m before coming to rest. The coefficient of kinetic friction among the skier and the snow is 0.0575. Primarily, how fast was th
Describe the numbers of grams of hydrogen gas are produced? Calculate the value of ΔH for the reverse of the previous reaction?
The potential difference among the accelerating plates of a TV set is around 20 kV. When the distance between the plates is 1.9 cm, determine the magnitude of the uniform electric field in the regi
Describe the vapor pressure of the mixture and the vapor composition? An equimolar mixture of ethylene and propylene is 50mol% vapor, 50mol% liquid at 20oC.
2 rescue vessels are pulling the broken-down motorboat toward the boathouse with forces of 840 lb and 960 lb. Angle between the forces is 24.5 degrees. Determine direction and magnitude of equilibr
Discuss at what temperature it would be 50mol% liquid, 50mol% vapor. A 50-50 (mole basis) mixture of ethylene and propylene is to be introduced into a tank that is to be kept at 5bar
i) Determine the tension in the cable? How much work is done by (ii) the tension in the cable, and (iii) the weight of person (iv) Utilize the work-energy theorem and determine the final speed of th
Find out the flow rate and the composition of the two streams when a 50% normal pentane 50% normal octane mixture flows into a chamber, flashes at 146oC and 3.6bar, and leaves as two streams, one ga
An alpha particle which is having the mass 6.6x10-24g emitted by the radium travels 3.4x107 +/- 0.1x107mi/h. Determine de Brogile wavelength of alpha particles in meters?
A uniform electric field of magnitude 405 N/C point out in the positive x-direction acts on the electron, that is primarily at rest. The electron has moved 3.10 cm. (i) Determine the work done by th
The person is chosen at random from sample. Determine probability which person selected (a) had 2 injections, (b) did not get flu, and (c) got flu and had 1 injection.
Discuss at what distance from the nucleus is the most probable point that a 2p electron will be found in the hydrogen atom? Submit the answer in units Angstroms.
Given that incident radiation of 5000A is used on a photocell containing cesium and the threshold wavelength of the photoelectric effect is 660 nm.
A cannon fires a shell at the angle of 45° above the horizontal. The shell consists of a mass of 15.7 kg, and its initial speed as it leaves the cannon is around 298 m/s.
Describe the enthalpy of reaction among sodium hydroxide (NaOH) and citric acid (H3Cit). Note that the neutralization reaction is: