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Why must the structures of the reactants and products be known in order to estimate the enthalpy change of a reaction from bond energies.
Suppose that you have 0.500 L of each of the following solutions, and an unlimited supply of water. (Note: C9H7NHBr is a salt containing the ions C9H7NH+ and Br- and C9H7N is quinoline
Calculate the capacity factor for decane on HP-1 column (25 m length, 0.25 mm I.D., 0.5 mkm film thickness) at 120 C. Explain.
Show your calculations for preparing the following solutions: 200ml of 20% (w/v) NaOH, 1 liter of 1.0M Tris [molecular weight (wm)= 121.1g/mol], and 100ml of 0.2M EDTA (mw =372.2g/mol)?
a gas sample containing 1.55 mol at 25degc exerts a pressure of 387 torr. some gas is added to the same container and
the hybridization of Carbon in this molecule? b) What would be its molecular shape? and c) What is the bond angle around the C atom?
Write the following molecular equation, complete ionic equation, and net ionic equation for the following reactions: a) Potassium iodide and silver nitrate solutions are mixed, forming a precipitate of silver iodide. b) Solutions of potassium carbona..
The pentapeptide leucylglycylthreonyltyrosylalanine is first incubated with l-fluoro-2,4-dinitrobenzene (FDNB). When the resulting compound is heated to 110oC for 24 h in the presence of 6 M HCl, the solution will contain
The molar concentration of Tl+ is M (4 dec places). The molar concentration of Cl- is M (4 dec places).
what is the mass in grams of 17.55ml of acetone? and what is the volume in milliter of 7.26g of acetone?
The molar heat capacity of silver is 25.35 j/mol C. How much energy would it take to raise the temperature of 10.0g of silver by 14.8 C. what is the specific heat of silver
carbonyl stretching frequency of aliphatic carboxylic acids in dilute solution is located near 1770cm. this frequency
How many liter of hydogen are required to react with 1.9 l of Oxygen to make water at STP according to Avogadro's law.
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