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Describe how you will separate the following mixture of ions in solution. Include an explanation/rationale of the reagent used.
a. Na+ , Al3+, Ni2+, Sr2+
b. Cu2+, Pb2+, and Cd2+
Draw the lewis dot structure oxalate and for carbon dioxide. In terms of electronic structure, what happens when oxalate decomposes
3CuSO4 + 2Fe --> 3 Cu + Fe2(SO4)3 If you place .092 mol of iron filling in a solution containing .158 mol of CuSO4, what is the limiting reactant? How many moles of Cu will be formed.
In the transition metals (the d-block), the electron configuration of cations is different than what you might expect. Instead of the d electrons being lost first, s electrons are lost first.
Which of the following pairs of amino acids would carry a negative charge on their side chain at pH 8.0?
Iron reacts with chlorine gas as follows: 2 Fe (s) + 3 Cl2 (g) > 2 FeCl3 (s)
Natural lithium is 92.58% lithium-7, with atomic weight 7.016, and 7.42% lithium-6, with atomic weight 6.015. What is the observed atomic weight of lithium as it occurs in nature?
How many grams of TiCl4 are needed for complete reaction with 155L if H2 at 430 degrees C and 780mmHg pressure? How any liters of HCl gas at STP will result from the reaction described in part (a)?
Mercury-205 has how many protons, neutrons, electrons, and electrons in the 1st quantum shell and in the compound BCl3 which is the more electronegative element?
A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath.
A reaction has a rate constant of 1.27×10?4 /s at 28 degrees C and 0.226 /s at 78 degrees C. Determine Activation Barrier. What is the value of the rate constant at 16 degrees C?
The specific heat of Ti is .523 J/gcelcius. What is the final temperature of 62g of Ti intially at 41celcius after 8.5kj of heat is added?
An unknown compound burned with a yellow, nonsmoky flame and was found to be insoluble in 5% sodium hydroxide solution but soluble in concentrated sulfuric acid.
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