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A voltaic cell consist of a pb/pb2+ half cell and a cu/cu2+ half cell at 25 c the initial concentrations of pb2+ and cu2+ are 5.3*10^-2 M and 1.6M respectively. what is the initial cell potentials
the frost melts due to the sun heating the surface of the car above the melting point B) the frost evaporates due to the sun heating the solid c) the frost cycles as does the saturation level of moisture in the winter air does from night to day Th..
In preparing solutions of the unknown acids, a much smaller mass of acid is used than in preparing an equal volume of KHP solution to achieve about the same concentration. Why is this
Baking soda (NaHCO3) can be made in large quantities by the following reaction: NaCl + NH3 + CO2 + H2O ---> NaHCO3 + NH4Cl If 9.41g of NaCl reacts with excesses of the other reactants and 3.81g of NaHCO3 is isolated, what is the percent yield of t..
Pure colored substances mostly exhibit a single peak (i.e. max) in the visible; therefore the simple rules of complementary colors apply. Mixtures are a little more complicated.
what is the change of enthalpy in condensing 15.0 g of water at 100 degrees C at constant pressure.
what mass of ccl2f2 must evaporate in order to freeze 115 g of water initially at 21 c? the heat of fusion of water is
Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by P
An aqueous solution contains the amino acid glycine. Assuming that the acid does not ionize in water, calculate the molality of the solution if it freezes at -1.1 degree centigrade.
Determine the volume of 0.220 M KOH solution required to neutralize each of the following samples of sulfuric acid. The neutralization reaction is:
Draw the lewis structures for NO2Cl and NO3Cl include lone pairs of electrons, resonance structures, and formal charges (minimized)
A compound with molecular formula C5H11N has no ? bonds. Every carbon atom is connected to exactly two hydrogen atoms.
What would happened if HCl was accidentally used instead of Na2CO3 to extract caffeine from tea bags. Would you be able to fix your mistake. How
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