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How many absorptions would you expect to observe in the 13C NMR spectra of cyclohexanone?
Calculate the vapor pressure of a solution made by dissolving 75.9 g of urea (molar mass= 60.06 g/mol) in 197.5 mL of water at 35C. (Hint: the vapor pressure of pure water at 35C is given
If 2.44 moles of Helium gas has a pressure of 2.4 atm at 343 K, what volume must the gas occupy.
Consider the following equibrium: CO(g) + 3H2(g) = CH4(g) + H2(g) Initially, 0.200 mol CO and 0.600 mol H2 are placed in a 2.00 L container.
a sample of hydrogen occupies a volume of 1.20 liters at a pressure of 425 kilapascals. if the temperature of the gas
What is the main structural feature of the azo dyes that causes them to be colored compounds?
Express the hamiltonian operator for the internal motion of Li atom and the proper expression for the approximate
what is the pH of the resulting solution after the nuetralization reaction (that is after the required amount of NaOH is added to the lactic acid)? Use a Ka of .00014 for lactic acid and assume that the solid was dissolved in 15.0 mL of distilled ..
What is the value of Keq for the reaction H2(g) + 1/2 O2(g)-> 1/2 H2O(l)?
Assuming the solution has a heat capacity of 4.18 J/°C · g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
Use this equation Keq= [FeSCN^2+]/[Fe^3+][SCN^-] to calculate the concentration of Fe^3+ and SCN^- in a solution that has an equilibrium FeSCN^2+ concentration of 4.5 x10^-5 M.
A hypothetical compound has a formula X4YZ5. if the atomic masses of X, Y, and Z are 165.3amu, 75.5amu and 37.2 amu. Calculate the % composition by mass of the compound
The mass of a cube of iron is 284 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
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