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Calculate the pH for (a) the initial acid solution in the flask, (b) the point at which 8.00 mL of the base has been added, (c) the equivalence point, and (d) the point at which 20.00 mL of the base
The reaction of an a particle with magnesium-25 (25(mass),12(atomic #)Mg) produces a proton (1(mass),1(atomic#)H) and a nuclide of another element. Identify the new nuclide produced. Also, write th
How many grams of copper would be deposited from a solution of copper(II) sulfate by a current of 3.00 milliamperes flowing for 6 hours?
Using the standard reduction potentials for the half reactions of a hydrogen-oxygen fuel cell, calculate the standard free energy change and equilibrium constant for the combustion of hydrogen.
What is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
Calculate the value of the Faraday constant, F, from the charge of 1 electron, 1.602x10-19 C. (Show all work to receive karma) (Hint: what are the units of the faraday constant and Avogradro's numb
A 5640 kg open railroad car coasts along with a constant speed of 8.60 m/s on a level track. Snow begins to fall vertically and fills the car at a rate of 3.50 kg/min. Ignoring friction with the tra
Calculate the value of Gibbs free energy change and the equilibrium constant under standard conditions for the following reactions. (Show all work to receive karma pts)
A 568- physics student stands on a bathroom scale in an 880- (including the student) elevator that is supported by a cable. As the elevator starts moving, the scale reads 480. If the scale reads zer
A long wire carrying a 5.0 A current perpendicular to the xy-plane intersects the x-axis at x= - 2.0 cm . A second, parallel wire carrying a 3.5 A current intersects the x-axis at x=+ 2.0cm .
Calculate the pH at the equivalence point for the titration of 0.20 M aniline (C6H5NH2, Kb = 3.8 x 10-10) with 0.20 M HCl. [Hint: remember the dilution factor caused by addition of titrant to the a
A particular solvent with and is being considered for an experiment. In the experiment, which is to be run at 75 , the solvent must not boil. Based on the total entropy change associated with the va
A long wire carrying a 5.0 A current perpendicular to the xy-plane intersects the x-axis at x = - 2.0 cm. A second, parallel wire carrying a 3.5 A current intersects the x-axis at x = + 2.0cm .
Calculate the molarity of a solution made by dissolving 0.810 grams of Na2SO4 in enough water to form exactly 890 ml of solution.
Why if the object moves as projectile the x component of the velocity is constant and the y component change at the same rate?
The first place is between the charges and is 5cm to the left of the negative charge. The second place is 10cm to the right of the negative charge. Find q1/q2, the ratio of the magnitudes of the cha
How much heat is released when 105 g of steam at 100 Co is cooled to ice at -15Co? the enthalpy of vaporization of water is 40.67 KJ/mol, the enthalpy of fusion for water is 6.01KJ/mol.
One issue confronting the use of carbon 14 decay to date materials is that of obtaining a standard. One approach to this issue is found in the field of dendrochronology, or use of trees.
If the depth of a swimming pool is 7m, find the radius of the circle formed by the cone that will appear to a person looking up from the bottom of a swimming pool. refractive index of water is 4/3.
Find the magnitude and direction of the electrostatic force on particle 2 due to particle 1. At what x and y coordinates should a third particle of change q3 = +4.0 μC be palced such that the net
What other syntheses do you think will work in place of 1-bromo hexane in an experiment of 1-bromo hexane and 2 bromo hexane on anti markovnikov bromination experiment?
A single point charge of +q is placed at the very center of two spherical shells. The inner shell is non-conducting, has a charge of -2q, and an inner radius of a and outer radius of b.
A 35.0 mL sample of an aqueous H2O2 solution was titrated with 23.5 mL of a 0.0204 M aqueous KMnO4 solution according to the balanced equation. Calculate the molarity of the H2O2 solution.
Assume that water at 100 degrees celsius is saturated with KNO3 and then allowed to cool to 15 degrees celsius. Calculate the percentage of KNO3 that will crystallize out.