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How many moles of 0.2 M KMnO4 were necessary to cause the color change to occur? (moles = molarity * the volume in LITERS) .
There is 18.01 mL of 0.2 M KMnO4.
if you are performing both an atmospheric distillation and a vacuum distillation in the same experiment: a. The atmospheric distillation is done first.
Mixture of equal amounts of both enantiomers of given compounds does not rotate the plane of polarized light. (e) Racemic mixture has the same melting point as both corresponding enantiomer.
Aqueous hydrochloric acid reacts with zinc metal to yield hydrogen gas and aqueous zinc chloride. Write a net ionic equation for the process: 2 HCl(aq) + Zn(s) ? H2(g) + ZnCl2(aq)
Which radio station broadcasts at a longer wavelength: 93.9 FM or 104.3 FM? To support your answer, list the actual wavelength values and units for each of these radio stations.
Use the tabulated half-cell potentials to calculate delta G for the following balanced redox reaction. Pb2+(aq) + Cu(s) --> Pb(s) + Cu2+(aq)
Explain how you would prepare 250.0mL of 0.2250 M calcium chloride using a 4.000 M stock solution of calcium chloride. Define what are the concentrations of calcium cautions and chloride anions in the diluted solution
Magnesium metal rects with oxygen to make a white powder knon as magnesium oxide. As the reaction proceeds, a bright white flame is seen. It is found that 2.6 g of magnesium reacts with1.6 of oxygen.
what quantity graphed versus time yields a straight line for a zero-order reaction and what is the equation for the half life time. b) identify quantity versus time for a first order reaction and equation for half life.
EXPLAIN why at low temperatures, e.g. -80 °C, when HCl is added to 1,3-butadiene the major product is 3-chloro-1-butene. c) EXPLAIN why at +80 °C when HCl is added to 1,3-butediene the major product is 1-chloro-2-butene.
An unknown compound has the formula CxHyOz. You burn 0.220 g of the compound and isolate 0.312 g of CO2 and 0.191 g of H2O.
electronic structure both the bohr model and the quantum modelwave function provide information about the electronic
Calculate the pH in a solution prepared by dissolving 0.10 mol of solid NH4Cl in .500 L of 0.40 M NH3. Assume that there is no volume change.
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