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Two identical conducting spheres, fixed in place, attract each other with a force of 0.114 N when their center to center separation is 53.00 cm. The spheres are then connected by a thin conducting wire. When the wire is removed, the spheres have a net positive charge and repel each other with an electrostatic force of 0.039 N. What was the initial negative charge on one of the spheres, and what was the initial positive charge on the other? (Hint: Use charge conservation and solve for one of the initial charges. You will end up with a quadratic equation. The solutions give you the positive and negative charges.)
A 195mg sample of a non-electrolyte isolated from throat lozenges was dissolved in enough water to make 10.0mL of solution at 25 degrees Celsius. The osmotic pressure of the resulting solution was 4.83atm. Calculate the molar mass of the compound.
Since there isn't an oxygen or some other electronegative atom in the molecule I'm not sure which peaks are which.
If 32.78 mL of NaOH solution is required to neutralize 20.00 mL 0f 0.2500 M of oxalic acid, H2C2O4(aq), what is the concentration of the NaOH solution. The balanced equation is: 2 NaOH(aq) + H2C2O4(aq) ? Na2C2O4(aq) + 2 H2O(l)
how many grams of 1,4-butanediamine and adipoyl dichloride are required to synthesis 5g of Nylom 4-6 (MW of repeat unit 198.26 g/mol)? show calculations
aniline c6h5nh2 kb 4.3 x 10-10 is a weak base used in the manufacture of dyes. calculate the value of kn for
For the subsequent compound, illustrate in its acidic form, state the form that will predominate in solution at pH = 5.5 and at pH = 3.5: CH3COOH (pKa =4.76)
you performed these reactions in an acidic solution diluting with 0.1m hno3. this is because iron forms an insoluble
Utilize the Kapustinskii equation for lattice energies as well as an appropriate Born-Haber cycle to compare the energies of formation of PbO and PbO2.
If equal masses of both metals were transferred to equal volumes of water in seperated graduated cylinders, which graduated cylinder would have the greatest volume change. why.
Assuming a BOD reaction rate constant of -0.4/day, what will be the the BOD remaining in the stream after the combined flow has traveled for 2 days? Remaining BOD after 2 days = [BOD] mg/L
What is the concentration (M) of a compound with an absorbance of 0.55 and an extinction coefficient of 3.5 M-1cm-1 with a path length of 1cm
A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250.00 mL. What is the concentration of nitric acid in the final solution?
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