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How man protons,neutrons, and electrons are there in the neutral atom of the isotope of silver named silver-109?
Calculate the molar solubility of Cu(OH)2, Ksp = 2.2 × 10-20, in 0.82 M NH3. Don't forget to use the complexation reaction Cu2+ + 4 NH3 ? Cu(NH3)42+, K = 5.0 × 1013.
When NEM is added to a solution of creatine kinase, Cys 278 is alkylated, but no other Cys residues in the protein are modified. What can you infer about the role of the Cys 278 residue based on this information
At 25 °C and 765 Torr, carbon dioxide has a solubility of 0.0342 M in water. What is its solubility at 25 °C and 1470 Torr
what is the molar concentration of phosphate ion in a 2.5 m aqueous solution of phosphoric acid
Calculate the initial concentration of the colored reactant if the absorbance is 0.605 at the beginning of the reaction.
How many grams of dipotassium phthalate (242.3 g/mol) must be added to 700 mL of 0.175 M potassium hydrogen phthalate to give a buffer of pH 6.00?
How many milliliters of 1.40 M H2SO4 are required to react with 5.00 g of solid containing 50.0 wt% Ba(NO3)2 if the reaction is as shown. Ba2+ + SO 4-2 BaSO4(s)
Consider the following reaction. N2(g) + 3H2(g) > 2NH3(g) The initial pressures of the H2 IS 3 atm and the pressure of the N2 IS 2 atm. Which statement is true? N2 is a limiting reagent H2 is a limiting reagent Neither gas is a limiting reagent
Solid CO2 (dry ice) sublimes at 195 K and its heat of sublimation ?Hsubl = 25.2 kJ/mol. A block of dry ice with a mass of 32.1 g sublimes. What is the entropy change, ?S, of the CO2? (Enter your answer in J/K).
A student dispensed 20.00 mL of 2x10^-5 M blue #1 solution into a test tube. He then added 2.00 mL of NaCl solution and 2.00 mL of 2.50 % bleach solution.
Compute the number of electrons in a flake of pure gold valued at $0.32. Assume that the price of gold is $1219.0/troy oz.
Consider a process carried out on 1.00 mol of a monatomic ideal gas by the following pathway from state A to state B. Pathway
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