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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
Calculate the kinetic energy of 2 kg of helium gas at 25 C. If this energy could be captured and used to accelerate a 1400.0 kg automobile, how fast would the car travel on a flat surface (ignoring
Calculate the freezing point of each of the solution 75.0 g of glucose,C6H1206 , added to 0.539 kg of water. Calculate the boiling point of the solution. 75.0 g of glucose,C6H1206 , added to 0.539 k
Milk spoils about 5x as fast at 300 K as it does at 250 K. What is the apparent activation barrier for the "milk spoiling" reaction
write the ground state electron configuration( using molecular orbital theory) for o2 and show that it is paramagnetic.
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
Perform a similar analysis of a stripping column. In this case, 100 lbmol/h of water with a concentration of 0.0045 lbmol SO2/ft3 is stripped with air to a concentration of 0.0005 lbmol SO2/ft3. The
You are designing a precision mercury thermometer based on the thermal expansion of mercury, Determine the initial volume of mercury that allows this change, Find the radius of a spherical bulb that c
Explain the dissolution of the sulfides of copper, bismuth and cadmium in nitric acid. Include ionic equations. If a yellow precipitate is obtained upon addition of hydrogen sulfide to an unknown sol
The redox reaction of peroxydisulfate with iodide has been used for many years as part of the iodine clock reaction which introduces students to kinetics. If Eºcell = 1.587 V and Eº of the
A car travels at a constant speed around a circular track whose radius is 3.1 km, What is the magnitude of the centripetal acceleration of the car
The decomposition of SO_2_Cl_2_ is first order in SO_2_Cl_2_ , and the reaction has a half-life of 245 min at 600 K. If you begin with 3.6e-3 mol of SO_2_Cl_2_ in a 1.0-L flask, how long will it tak
Propose a reasonable reaction mechanism for the sodium hypochlorite oxidation of 3-heptanol. Give the IUPAC name of the expected product.
Humid air breaks down in a sufficiently strong electric field, What is the magnitude of the electrostatic force for an electron and for an ion with a single electron missing