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Which of the following reactions lies to the right, favoring the formation of products, and which lies to the left, favoring formation of reactants?
Name two amino acids that are mostly positively charged at neutral pH. A Lysine and arginine B Histidine and arginine C Cysteine
Explain the preparation of phenylmagnesium bromide from bromobenzene and magnesium metal is an instance of an oxidation-reduction reaction. Explain what is oxidized and what is reduced
A graduated cylinder contains 155 mL of water. A 15.0 g piece of iron (density = 7.86 ) and a 20.0 g piece of lead are added. What is the new water level in the cylinder?
Predict the product(s) and write a balanced equation for the following redox reaction: 1. Phosphorous trichloride + chorine
A 325-mL sample of solution contains 25.3 g of CaCl2, which is fully dissolved. Calculate the molar concentration of Cl- in this solution.
If the concentration of lead iodide [PbI2] in a saturated aqueous solution is 1.5 x 10-3 M, what is the Ksp of PbI2
the indicated ph value for the titration of 50.00 ml of .100 M benzoic acid (ka = 6.3 x 10^-5) with .0500 M KOH: ph = 4.20, 4.50.8.06, 11.50. write te reaction for KOH reacting with benzoic acid and the equilibrium for each pH value
One beaker contains pure water, another contains salt water, and another contains sugar water. How can you tell the which beaker is Which?
Calculate the [Zn2+] in a solution of ZnC2O4 held at a pH of 3.00. Remember C2O4^2- is a weak base so you must consider other equilibria. (Ksp(ZnC2O4)=7.5X10^-9, Kb1=1.8X10^-10, Kb2=1.8X10^-13).
What is the hydronium-ion concentration of a solution formed by combining 700. mL of 0.19 M HCl with 300. mL of 0.52 M NaOH at 25ºC
a 0.4400-g sample of impure caoh2 is dissolved inenough water to make 43.90 ml of solution. 20.00 ml of theresulting
Estimate the value of the equilibrium constant at 625 {rm K} for each of the following reactions. Delta H{^{circ}_{rm f}} and S{^{circ}} for rm BrCl(g) is 14.6 {rm kJ/mol} and 240.0 frac {rm J}{rm mol cdot K}, respectively.
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