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In an Fe and Cr voltaic cell where the Fe is in Fe(NO3)2 and the Cr is in Cr(NO3)3; calculate the cell potential at 25 C if the initial concentration in the half cells are as follows [Cr 3+] = 2.45M and [Fe 2+] = .75 M
The absorbance of a blank solution prepared in the same manner was 0.025. The molar absorptivity of the copper complex is 7.90 x 103 L.mol?1.cm?1. Calculate the weight percent copper in the rock sample
The vapor pressure of water at 29 ^circ rm C is 30.0 rm torr. What is the mass percentage of aluminum in this alloy?
Exactly 100 mL of 0.19 Mnitrous acid (HNO2) are titrated with a 0.19 M NaOH solution. Calculate the pH for the following. (a) the initial solution
What must that mean in terms of Light absorption and transmission and in terms of the energy associated with any molecular orbital transitions in indium antinomide?
Calculate the difference in the ionization energies for 1H and 4He atoms. This result allows you to compare the effect on the ionization energy of changing the nuclear charge
Suppose a vessel contains 6.4 g of NH3, how many grams of O2 are needed for a complete reaction?
A 1.00 L sample of chlorine gas at 1.00 atm and 298 K reacts completely with 1.00 L of nitrogen gas and 2.00 L of oxygen gas at the same temperature and pressure.
attractive interaction among the molecules of a gas are more important than repulsive interactions, it's fugacity coefficient is less than
Octane has a density of 0.692g/mL at 20 C. How many grams of O2 are required to burn 1.00 gal of C8H18?
volume of 20.0 mL of a 0.190 M HNO3 solution is titrated with 0.550 M KOH. Calculate the volume of KOH required to reach the equivalence point.
Write a chemical equation describing the condensation process for CO2 and a chemical equation describing the freezing
the osmotic pressure of the solution is 0.443 atm. What is the percent ionization of this acid? I got 20% but its wrong
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