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The rate constant for a certain reaction is = 6.10×10?3 . If the initial reactant concentration was 0.750 , what will the concentration be after 18.0 minutes
The Ka of a monoprotic weak acid is 6.08 × 10-3. What is the percent ionization of a 0.187 M solution of this acid
Calculate the pH when 59.0 mL of 0.229 M hydrochloric acid is mixed with 59.0 mL of 0.229 M sodium hydroxide solution at 25 °C. Calculate the pH when 59.0 mL of 0.229 M of a certain monoprotic w
Equal volumes of 0.190 M weak base (Kb = 2.5× 10-9) and 0.190 M HCl are mixed. Calculate the pH of the resulting solution.
Enough of a monoprotic acid is dissolved in water to produce a 1.05 M solution. The pH of the resulting solution is 2.97. Calculate the Ka for the acid.
For each of the following polyatomic ions, provide a Lewis structure, including resonance if appropriate and all non-zero formal charges. A.) BH4- B.) HCO2- C.) AsCl4- D.) ICl2-
Complete and balance the following half-reactions. In each case indicate whether the half-reaction is an oxidation or reduction. Use the lowest possible coefficients. Include states-of-matter under
A generic salt, AB3, has a molar mass of 183 g/mol and a solubility of 6.60 g/L at 25 °C. What is the Ksp of this salt at 25 °C
The Ksp of magnesium carbonate, MgCO3, is 6.82 × 10-6. Calculate the solubility of this compound in g/L.
Complete and balance the molecular equation and write a net ionic equation, make sure to include the physical states of the compounds: 1. potassium carbonate + strontium nitrate
A lake has a pH of 8 and the total molar concentration of nitrogen species (NH3 and NH4+) is 7.1×10-4 mol/L. what is the percentage of aqueous NH3 in the lake
250 mL of a NaCl solution is treated with excess AgNO3 and all the Cl- is precipitated as 5.78 g of AgCl. What was the concentration of the original NaCl solution
The metal is obtained from seawater in a process that includes precipitation, neutralization, evaporation, and electrolysis. How many kilograms of magnesium can be obtained from 4.18 km^3 of seawate
A velocity selector in a mass spectrometer, like that shown in Figure 21.39, uses a 0.130 T magnetic field. (a) What electric field strength is needed to select a speed of 4.50 106 m/s. (b) What is
At 25 °C only 0.0210 mol of the generic salt AB3 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C
Copper(I) ions in aqueous solution react with NH3(aq). Kf = 6.3x10^-10 M^-2 Calculate the solubility (in g·L-1) of CuBr(s) in 0.86 M NH3(aq).
What is the total pressure in a 10.0 L container that contains 0.56 g of SF6, 2.3 g of NO, and 1.23 X 10^23 g of Co molecules at 300K
The volume of HI(aq) required to reach the equivalence point : (1c) The pH at the half-neutralization point. (1d)The pH at the equivalence point.
The volume of HI(aq) required to reach the equivalence point : (c) The pH at the half-neutralization point. d)The pH at the equivalence point
What is the concentration of a solution made by diluting 95 mL of 6.0 M HCL to a final volume of 750 mL
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted.
5.97 g of CuNo3 is dissolved in water to make a 0.860 M solution. What is the volume of the solution
Carbon monoxide and chlorine combine in an equilibrium reaction to produce the highly toxic product, phosgene (COCl2). CO(g) + Cl2(g) Picture COCl2(g) If the equilibrium constant for this reaction