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A solution is prepared that initially contains 0.10 M Ag+(aq) and 0.80 M NH3 (aq). The Kf for the formation of Ag(NH3)2+(aq) is 1.7 x 10^7. Write the equilibrium equation that represents the formation of this complex ion.
Ten grams of hamburger were added to 90 mL of sterile buffer. This was mixed well in a blender. One-tenth of a mL of this slurry was added to 9.9 mL of sterile buffer.
If you did reaction of zinc with 6 M HCl at 20C and at 50C. should you expect the reaction to be faster at the higher temperature. how much faster
a muon is a fundamental particle equivalent to a one electron atom. the particle has z 2 and a negatively charged
State the chemical composition of the sterol that is present in high levels in most people who belong to the high-risk group. Distinguish between the 'good' and 'bad' forms of this sterol.
a 52kg person is standing on a bathroom scale in an elevator moving upward. a if the scale reads 58kg what is the
A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. the combustion of 88.5 mg produced 241 mg of CO2 and 49.2 mg of H2O. the molar mass of the compound was 162 g/mol.
Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25. Suppose that 1.15 of rubbing alcohol evaporates from a 65.0 aluminum block.
calculate the activation energy for a reaction if its rate constant increases from 10 to 45 s as the temperature increases from 298 to 315 k .
sotonic saline solution, which has the same osomotic pressure as blood, can be prepared by dissolving 0.923 g of NaCl in enough water to produce 100.mL of solution. What is the osmotic pressure of this solution at 25 ?C?
A formate buffer (pka = 3.75) is prepared by mixing 50 mL of a 4 M formic acid and 2 g of solid sodium hydroxide (MW= 40g/mol) in total volume of 1.0 L. A peptide with the amino acid sequence C-P=T-Y-R-L-D-Q (MW = 995.12 g/mol) is dissolved in thi..
Consider the combustion reaction: CH4(g) + O2(g)= CO2(g) + H2O(l) is this an exothermic reaction. If 100g of CH4 is burned, calculate the heat exchange (balance the equation).
Calculate the pH of 1.00 L of a buffer that is 0.200 M in HC2H3O2 and 0.100 M in NaC2H3O2. The Ka of HC2H3O2 = 1.8E-5
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