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Question: A 158.5 mg sample of pure Cu metal is dissolved in a small amount of concentrated nitric acid giving Cu2+ ions in a solution. It is then diluted to a final volume of 1.00 L. What is the molar concentration of Cu2+ ions in the final solution?
The Occupational Safety and Health Administration has set the limit on the maximum percentage of carbon dioxide (CO2) in air a worker can breathe at 0.500% by mole
what is the chemical formula for this salt? B- a brown colored salt contains a cation from group 3, it has no reaction with concentrated H2SO4 and produces a soluble product with acidic AgNO3 and acidic BaCl2, this salt is not water soluble. What ..
Sand consist mainly of silicon dioxide. When sand is heated with an excess of coke (carbon), pure silicon and carbon monoxide are produces. Write a balanced equation for the reaction
a 20.0 mL sample of NaIO3 was treated with an acess of KI and HCl and the iodine produced titrated with 0.05125 M Na2S2O3. If 19.35 mL, of Na2S2O3 solution were required to reach a strach-iodine endpoint, what was the concetration of the NaIO3
PH And Percent Ionization, 1. Determine the pH and the percent ionization in a 0.50M solution of KOBr. The Ka for HOBr = 2.5 x 10 ^ -9.
5.00g of Mg was reacted completely with Cl2 to form MgCl2 and 63.0kJ of heat was evolved. what is the molar enthalpy of formation of MgCl2?
Commercial club soda is produced by pressurizing water with 10 atmospheres of CO2. Find the value of KH for CO2 on the net or the library, and calculate how much CO2 is in 12 fl ox. glass of club soda.
Consider the titration of a 24.0 ml sample of 0.120 M HC2H3O2 with 0.105 M NaOH. Determine the initial pH.
1. The acid hydolysis of a small peptide was found to be Tyr, Phe, Asp,Gly,Lys,Val and Ala. 2. The original peptide when treated with trypsin produced two pepetides
The Ogallala aquifer is the largest in the United States, covering 450,000 across eight states, from South Dakota to Texas. This aquifer provides 82% of the drinking water for the people who live in this region
being used as a membrane to purify nitrogen. if the flux of nitrogen through the member is 8.2*10^-7 kg/m^2-s, what is the production rate of nitrogen in g/h?
You are given a worked wooden item from an archaeological dig believed to date to during the last glaciation. As such, the artifact would be another piece of evidence.
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