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A charge of 25 nC is uniformly distributed along a circular arc, What is the magnitude of the electric field at the center of the circle along with the arc lies
Typically, gasohol is a mixture of 90% octane H8C18 and 10% ethanol C2H4OH. Determine the energy output of 1 gram of gasohol using the following two pieces of information
A square with ½-meter long sides has +1 nC at the top left corner, +2 nC at the bottom right corner, Calculate the components of the Electric field at the top left corner add each contribution
Using Standard Free Energies of Formation at 25 degrees C, determine if the production of phosgene gas COCl2 from the combination of carbon monoxide gas (CO) and chlorine gas (Cl2) is spontaneous at
A 2.31?102g piece of copper at a temperature of 401.K and a 1.07?102g piece of aluminum at a temperature of 2.17?102K, What is the equilibrium temperature of the mixture
Further recylcing reactions that would take the products back to some of the monomers. What reactions to use? What would you get as products
A 100 kg sphere and a 100 g sphere outside it are held fixed with the distance between their centers equal to 0.5 m, What are the magnitude and direction of the force on each of the spheres
The cell constant of a conductivity sell is equal l/A. The resistance of the NaCl solution is found to be 254 Ω . Using the same sell the resistance of the 0.05 M KCL is found to be 467 &Omega
Visible light passes through a diffraction grating that has 900 slits per centimeter, What is the difference between these wavelengths
chloroform, CHCl3 has a ΔHvap = 29.4 kL/mol. what is it's vapor pressure at 25 degrees celsius
The following osmotic pressures were observed for bovine serum albumin (BSA) in 0.15 M NaCl at 273 K. Calculate the molar mass of BSA.
Bacteria vary somewhat in size, but a diameter of 2.00?m is not unusual, What would be the volume (in cubic centimeters)
Estimate the boiling point of a 0.6 molal solution of NaCl in water, What is the osmotic pressure of a 100 mL of toluene solution that contains a total of .005 moles of a polymer dissolved in it at 2
Bacteria vary somewhat in size, but a diameter of 2.00?m is not unusual, What would be surface area (in square millimeters) of such a bacterium, assuming that it is spherical
There is a uniform electric field on both sides of a large plane. Its magnitude is 80 N/C and its direction is toward the plane, on each side of it
At every point on the surface of a sphere of radius 0.4 m the electric field is radially outward, with a magnitude of 20 N/C
A sphere of mass M is supported by a string that passes over a pulley at the end of a horizontal rod of length L, Find the mass of the portion of the string above the rod
Calculate the minimum mass of ethane that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits. 2 C2H6 + 7 O2 = 4 CO2 + 6 H2O
You found that pH=pKa=4.2 when 12.50 mL of NaOH hadbeen added. The concentration of the sodium hydroxide was 0.500M. Calculate the initial percent dissociation of the acidsample.
Write the net ionic equation to show the formation of a precipitate (insoluble salt) when the following solutions are mixed. Write noreaction if no insoluble salt forms CaCl2(aq)+Mg3(PO4)2(aq)
Write the net ionic equation to show the formation of a precipitate (insoluble salt) when the following solutions are mixed. Write noreaction if no insoluble salt forms KCl(aq)+Pb(NO3)2(aq)
Calculate the freezing point of each of the solution 0.220 g C12H22011 of sucrose, , a nonelectrolyte, dissolved in 1.75 kg of water.
A charge Q1 = 6u is at the origin of an x y coordinate system, What are the magnitude and direction of the force of Q2 on Q1, What are the magnitude and direction of the force of Q3 on Q1
How does the enthalpy change for the neutrlization of hydrochloric acid compare to the enthalpy change for the neutralization of aceitc acid. Explain any similarities or differences.
an 8.5 m long wire of resistance 20.6 \(\Omega\) carries a current of 6.6, What is the magnitude of the electric field in the wire