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Problem- A 20% sodium hydroxide solution has a density of 1.20 g mL-1. For a certain reaction 42.0 g of sodium hydroxide are required. What volume of solution does this represent?
(A) 57.0 mL (B) 70.0 mL (C) 175 mL (D) 210 mL (E) 252 mL
Using textbook reference solve the reactions given in above problem
a solution is prepared by mixing 50.0 ml of 0.50 m pbno32 with 50.0 ml of 1.7 m kcl. calculate the concentrations of
a rigid tank contains 1.30 moles of an ideal gas. determine the number of moles of gas that must be withdrawn from the
The most abundant isotope of uranium, ^238 U, does not undergo fission. In a breeder reactor, however, a ^238 U atom captures a neutron and emits two beta particles to make a fissionable isotope of plutonium, which can then be used as fuel in a nu..
dinitrogen pentoxide decomposes in chloroform as a solvent to yield nitrogen dioxide and oxygen gas. the decomposition
Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.
Starting with 2.5 grams of vitamin D3 and 10mg of palladium catalyst, how many millimoles of H2 will be necessary to hydrogenate all of the Carbon Carbon double bonds in D3?
The solubility of caffeine in water is 2.2mg/mL at 25 degrees celsius and 670 mg/mL at 100 degrees celsius. How many mL of boiling water would it take to dissolve 23g of caffeine
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A cell is constructed at 298 K based on the reaction 2 Co3+(aq) + 2 H2O(l) H2O2(aq) + 2 H+(aq) + 2Co2+(aq), E° = 0.14 V. Calculate the pH in the anode compartment if the cell emf = 0.23 V when [Co3+] = 0.17 M, [H2O2] = 0.72 M and [Co2+] = 0.48 M. ..
Calculate the partition coefficient of butandioic acid between ether and water at 298K.
What is the free energy change, ?G°, for the equilibrium between hydrogen iodide, hydrogen, and iodine at 453°C? Kc = 0.020
If the observed specific rotation of the mixture is -50.0°, what is the specific rotation of the pure R isomer?
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