Acidic solution of potassium dichromate
How many seconds are required to produce 4.94 mg of chromium metal from an acidic solution of potassium dichromate, using a current of 0.234 A?
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If 25.0 mL of 0.200 M NaF solution are mixed with 10.0 mL of 0.150 M Pb(NO3)2 solution, how many grams of the precipitate would be formed?
The machine part ABC is supported by a frictionless hinge at B and a wedge at C. Knowing that the coefficient of static friction is 0.20 at both surfaces of the wedge.
A pulse consisting of multiple optical waves with different wavelengths is propagating in a medium with the following dispersion characteristic. The center wavelength of the pulse is 900 nm. Find the speed of the pulse propagation.
First determine which is the limiting reagent, then calculate the heat produced by the reaction (q), and molar heat of the reaction (H) using the above equations.
A total of 2.00 mole of a compound is allowed to react in a foam coffee cup that contains 162g of water. The reaction caused the temperature of the water to rise from 21.0 C to 24.7 C. What is the enthalpy of this reaction? Assume that no heat is
Consider the titration of 50.0 mL of 0.217 M HN3 (Ka = 2.6 x 10-5) with 0.183 M NaOH. Calculate the pH of the solution after the addition of 29.6 mL of NaOH solution.
In the figure two large, thin metal plates are parallel and close to each other. On their inner faces, the plates have excess surface charge densities of opposite signs and magnitude 6.01 x 10-22 C/m2. What is the magnitude (in N/C) of the el
3 solutions are mixed together to form a single solution. One contains 0.2 moles of Pb(C2H3O2)2, the second one contains 0.1 moles of Na2S, and the third contains 0.1 moles of CaCl2.
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