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Write one overall equation, using an alkali metal ion and a nitrate ion as spectator ions if needed, for the following net ionic equation: H+(aq) + OH-(aq) ? H2O(l)
Calculate the solubility product (Ksp) for barium fluoride if the concentration of the barium ion is 3.6 x 10-3 M and of the fluoride ion is 7.2 x 10-3 M.
What is the maximum concentration, in mol/L and mg/L, of Cu^2+ and Zn^2+ in a solution that contains both ions if the pH is (a) 10.00, (b) 11.00, (c) 12.00
A reaction mixture initially contains .56 atm CO2 and .32 atm CO. what is the equilibrium pressure of CO
Ozone (O3) and )2 have a kc= 6.32 *10^37 in the reaction below, if a container is filled with a concentration of .0500 M O2 (and no ozone), what will be the concentration of ozone when the system co
if a gas mixture (not at equilibrium) contains partial pressures P(NOCl) = .22 atm, P(NO) =.10 atm, and P(Cl2) = 0 atm, what is the reaction quotient, Qp, for the reaction below? 2NOCl(g) equilibriu
A reaction has a rate constant of 7.69 M^-1s^-1 at 219 K and a rate constant of 3.36 *10^4 M^-1s^-1 at 344K. what is the activation energy for this reaction
If the concentration of NO2 is .00556 M at the beginning of the reaction, what will [No2] be after 300 secondd? NO2 (g) arrow NO (g) + O (g)
Cycloprpane decomposes in a first-order reaction at 500 C If the cyclopropane concentration is .670 M at the start of the reaction and is .367 M after 900 s, what is the rate constant for the reacti
a gas mixture contains 5.6 g of N2, 1.4g of h2, and 27.6 of CH4. What is the mole fraction of h2 in the mixture
In a hydrogen fuel cell, hydrogen gas and oxygen gas are combined to form water. Write the balanced chemical equation describing this reaction (using lowest whole-number coefficients).
Calculate the solubility product (Ksp) for silver bromide if the concentration of the silver ion is 0.770 M and of the bromide ion is 0.770 M.
A solution is made by dissolving 4.055 g of FeCl3 in 500 mL of water. The freezing point of this solution is -.316 C. What is the van Hoff factor (i) for FeCl3 at this concentration? (kf for water is
A 100 mL sample of an aqueous solution at 25 C contains 20.4 mg of an unknown nonelectrolyte compound. If the solution has an osmotic pressure of 5.88 torr, what is the molar mass of the unknown com
If a solution is made from 100 g of pentane and 100 g of hexane, what will be the mole fraction of pentane in the gas phase over that solution (if only hexane and pentane vapor are present)? Assume
What is the freezing point of a solution of 5.00 g of benzophenone (C13H10O) in 100 mL of benzene (benzene density = .887 b/mL). Pure benzene has a melting point of 5.50 C and the Kf of benzene is 5
A mixture is at equilibrium at a temperature of 492 K and contains 0.997 M NH3 and 0.211 M H2. Determine the concentration of N2 at equilibrium if the Kc = 170. N2(g) + 3 H2(g) ? 2 NH3(g).
Identify the oxidizing agent and reducing agent. Determine the number of electrons transferred in the balanced chemical equation.
A solution that is 51.3% by weight CaCl2 in water has a density of 1.514 b/cm cubed at 25 C. what is the molarity (M) of CaCl2 (aq) solution and molality (m) of CaCl2 (aq) solution
Which of the following gases has the largest Henry's law constant, Kh, for dissolution in water at room temperature and why
When X-rays with a wavelength of 154 pm (pm = 10^-12 m) are diffracted from an unknown crystalline compound, the first reflection occurs at theta= 4.24 What distance does that correspond to? (assume
Hexane has a vapor pressure of 100 torr at 15.8 C and 400 torr at 49.6 C. What is its deltaHvap