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Calculate the absorbent coefficient (e) when the absorbance of a 2.8 x 10^-4 M solution of proline at 280 nm is 0.45 and the path length is 1 cm?
A piece of dry ice (solid carbon dioxide) with a mass of 31.5 g is allowed to sublime (convert from solid to gas) into a large balloon.
Cinnamon gets some of its flavor from cinnamaldehyde that is 81.79% C; 6.10% H and the rest is oxygen. Determine the empirical formula for this compound (enter your answer in the form CxHyOz)
Determine if the following reactions will form a precipitate when mixed. If one is formed, write the BALANCED formula unit, the COMPLETE IONIC, and NET IONIC equations. If a precipitate doesn't form, write NR for no reaction
considering the given equationcuscn kio3 hcl rarr cuso4 kcl hcn icl h2o balance the equation using the smallest
Determine the Boyle temperature for a gas with the equation of state: PVm=RT(1+(P/Pc)(Tc/T)*8/57*(1-4(T/Tc)^2)).
What are the signs of Hvap and Svap for water. Do you expect the signs of these quantities to be the same for other liquids. Explain.
Consider the titration of 30.0 ml of 0.048 M NH3 with 0.025M HCl. Calculate the pH after the following volumes of titrant have been added.
Electron dot formulae (Lewis structures) with only the valence electrons, show the bonding - Write balanced equations
when atoms of the hypothetical element x are placed together they rapidly undergo reaction to form the x2nbspmoleculea.
Draw the structures of the products of the neutralization reaction between methylamine and pyridinium ion.
What would you expect to observe in terms of the angle of rotation if you were to double the concentration of a sample, but kept all other variables constant?
A reaction has a standard free-energy change of -14.00 kJ mol-1 (-3.346 kcal mol-1). Calculate the equilibrium constant for the reaction at 25 °C.
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