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If a 10.00mL sample of unknown concentration of HF is titrated with 28.94mL of 0.1040M NaOH, what is the concentration of HF?
If the outermost electron in a potassium atom were excited to a 4d-orbital and then fell to the same orbitals, describe qualitatively how the emission spectrum would differ from that of hydrogen (do not do any calculations). Explain your answer.
Calculate the molar heat (enthalpy) of combustion for butyric acid.
What is the empirical formula of a substance that contains 0.183 mol of carbon, 0.367 mol of hydrogen, and 0.183 mol of oxygen
A student placed 13.0 g of glucose C6YH12O6 in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water
What evidence exist to support the theory that an atom contains a massive nucleus that is very small relative to the size of the whole atom
Which two reagents below would you choose to synthesize 3-ethyl-2-phenyl-2-pentene using the Wittig procedure? (triphenylphosphine, solvents, and a base are provided)
Write the balanced reaction equation for the precipitation of calcium carbonate from potassium carbonate and calcium chloride.
The instruction booklet for your pressure cooker indicates that its highest setting is 12.5 psi . You know that standard atmospheric pressure is 14.7psi
A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 degrees C. The initial concentrations of Pb2+ and Cu2+ are 5.00×10^?2 M and 1.50 M , respectively.
At the end of the process, the pressure is 2.50x10 to the 6 Pa. Calculate the final temperature of the gas. Calculate q, w, deltaU, and deltaH for this process.
The following ions contain the same number of electrons. Rank them in order of decreasing ionic radii. Rank from largest to smallest radius. Cs^+, I^-, Te^2-, La^3+, Ba^2+, and Sb^3-
What mass of natural gas {rm{(CH}}_4 ) must you burn to emit 268 kJ of heat?
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