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Consider the following equilibrium: Cu2+ + 4NH3 Cu(NH3)42+ (Kf = 4.8e+12) A solution is made by mixing 10.0 mL of 0.90 M CuSO4 and 1.50 L of 0.490 M NH3
What is the solubility of MX3. MX3 M3+ + 3X1- (Ksp = 2.00e-09) a) in water solubility = M b) in 0.11 M KX solubility = M c) in 0.16 M M(NO3)3 solubility = M
A delivery man travels 34.0 m north, 23.0 m east, 12.0 m south, then takes an elevator 32.0 m up into a building. What is the magnitude of his displacement
You are on an unknown planet orbiting an unknown star. When the 108 cm long camera is pointed at the star an image is formed that is 1 cm in diameter, what is the diameter of the star
The solubility of MX2 is 8.91e-07 M. What is its Ksp to three sig figs? What is the molar solubility of M2X (Ksp = 1.38e-10)? M What is the concentration of M1+ in a saturated solution of M2X? M
Two equally charged, 1.00 g spheres are placed with 2.00 cm between their centers. What is the magnitude of the charge on each sphere
Indicate which of the following are reasons for performing a simple distillation in this procedure (more than one answer may be correct): a. To obtain pure diethyl ether
Why does surface complex formation with a weak acid lead to a relative maximum in the extent of surface complex formation (adsorption) at a pH which is usually near the value of -log acidity constan
A 11.2 kg object oscillates at the end of a vertical spring that has a spring constant of 1.90 104 N/m. Calculate the frequency of the dampened oscillation
Calculate the value of Ksp at this temperature. Give your answer in scientific notation
Find the total electrostatic potential energy of a solid sphere of radius R that is uniformly charged in volume with total charge Q in terms of Q, R, and k
In some industrial processes, sulfite is added to remove dissolved O2 to prevent corrosion of pipes. Write the balanced overall chemical reaction for reduction of dissolved O2 by sulfite (SO32-)
A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. What angle would the single rope make relative to the dashed line
Choose the correct answer of the following, explain why it is true, and explain why the other choices are untrue: (A) high pE is associated with species such as CH4, NH4+, and Fe2+
Object A, which has been charged to + 16nC , is at the origin. Object B, which has been charged to ? 20nC , is at (x,y)=(0.0cm,2.0cm). What is the magnitude of the electric force on object A
Analysis of water in a sediment sample at equilibrium at ph 7.00 showed [so42-] = 2.00 x 10^-5 m and a partial pressure of h2s of 0.100 atm. show with appropriate calculations if methane, ch4, would
The nearest star to the Sun is 25 x 10^12 miles away. How far is this in light-years
A chemist performed a titration experiment in order to determine the concentration of a given aqueous solution of HCl (an acid). She pipeted 25.00 mL of the HCl solution into an Erlenmeyer flask.
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 29.4m/s2. Find the maximum height ymax reached by the rocket
The Ksp of zinc oxalate (ZnC2O4) at a given temperature is 7.87 x 10-9. Calculate the molar solubility at this temperature. Use E notation
An infinitely long line of charge has linear charge density 5.00×10?12C/m. Calculate the protons initial kinetic energy
When 15 mL of a solution containing 1.2 M Na2S is diluted to 30mL, a dilute solution is formed. How many moles of Na+ ions are contained in 20 mL of the dilute solution
A small glass bead has been charged to + 25nC . A tiny ball bearing 3.0cm above the bead feels a 1.8×10?2Ndownward electric force. What is the charge on the ball bearing
A typical frostless refrigerator uses 655 kWh of energy per year in the form of electricity. Suppose that all of this electricity is generated at a power plant that burns coal containing 3.0% sulfur
How do you calculate the concentration % of a unknown solution with the equation y=30.662x-0.2147 with a known absorbtion of 0.330