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You created a buffer system by first neutralizing the supernatant solution containing Pb2+, Fe3+, Al3+, Ca2+, Cu2+, and K+ ions with 6M NH3 solution , and then adding an equal additional volume of 6M NH3 solution. Explain what forms of NH3 were present in the final solution, their relative concentrations, and how they could function as a buffer
If the outer electron in a Sn- ion is removed by absorbing a photon of visible light having an energy of 4.829E-19 J, what is the amount of leftover energy that goes into the kinetic energy of the ejected electron?
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 8.0×10-2 M NaOH. A:lactic acid
A gas mixture with a total pressure of 750mmHg contains each of the following gases at the indicated partial pressures:CO2 , 133mmHg ; Ar,215mmHg and O2,177mmHg
A student went out of the lab to talk on the phone and returned to find that their partner had neglected to monitor the ice bath used to chill their diazonium ion solution
Assuming a 75% recovery of the volume from the first filtration, what volume of cation solution will be used in part B of the procedure? (Hint: you started with 100ml and added NaOH)
Select all of the correct statements about the relative acid strengths of pairs of acids from the choices below. HCl is a stronger acid than H2S because Cl is more electronegative than S. H2SO4 is a stronger acid than H2SeO4 because S is more electro..
Draw the para isomer produced when toluene reacts with \rm Br_2 in the presence of an iron(III) bromide catalyst
If 2.00 g of Mg reacts completely with 50.0 mL of HCI solution, what is the molarity of the HCI solution?
An experiment requires 45.8 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder.
an acetic acid solution of 2.87 pH is titrated with 1.5 mL of bromocresol green. When the color changes to light green, the pH is 3.95. The final color of the solution is dark blue.
picometers and a crystal of metal X has a unit-cell that is faced centered cubic. Calculate the density of Metal X(Atomic Weight = 42.3g/mol)
when cyclopentane is exposed to Br2 in presence of light. Write the formulas of all possible dibromination products. Draw molecule by placing atoms on grid.
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