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THe energy of a photon is 4.54 10-19 J. What is the wavelength of the corresponding light?
Calculate the density of a block.
How much heat is required to raise the temperature of a 7.40-g sample of iron (specific heat = 0.450) from 25C to 79.8C?
Write out the un-ionized structure of valine & phnylalanine. Do either have enantiomers? Write the zwitterion structures of both.
Write a detailed mechanism for the reaction of salicylic acid with acetic anhydride, showing clearly the function of the catalyst, sulfuric acid.
A) H2O to liquid NH3 B) CH3COONa to liquid NH3 C) H2O to liquid HCl D) Li2SO4 to liquid H2O E) Na2SO4 to liquid H2SO4 5. The MO delta (?) bonding can result
Calculate the amount of energy in the form of heat that is produced when a volume of 1.25 L of SO2(g) is converted to 1.25 L of SO3(g) according to this process at a constant pressure and temperature of 1.00 atm and 25.0 °C. Assume ideal gas behav..
The normal melting point of napthalene is 353.05K. When the solution becomes saturated at 310k, we expect the mole fraction of napthalene in the saturated solution.
When the mixture is ignited, gases are produced and 815 J of energy is released. To what volume will the gases expand against a constant pressure of 635 mmHg, if all the energy released is converted to work to push the piston?
A coffee cup calorimeter is being used in this lab despite the fact that one of the reactions produces gas. Calculate the work done using the information
What is the pH of a solution to which 35.0 ml of .20 M HCl and 50.0 ml of .42M NaOH have been combined
Compute w when 181 grams of iron (III) oxide (MM = 159.7 g/mol) combines with excess carbon(C)) to produce carbon dioxide(CO 2 ) gas at 359 K: express your answer in kilo joules
what are the possible sources of error when finding the density of a liquid and of a solid? what can be done to avoid these errors?
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