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Two identical balloons are filled with the same volume, one with air and one with helium. The next day the volume of the air-filled balloon has decreased by 4.5%, by what percent has the volume of the helium-filled balloon decreased? (Assume that the air is four-fifths nitrogen and one-fifth oxigen, and that the temperature did not change?)
Calculate the enthalpy change, , for the process in which 41.5 of water is converted from liquid at 2.1 to vapor at 25.0.
suppose that a fully charged lead-acid battery contains 1.50 rm l of 5.00 m rm h2so4. what will be the concentration of
What is the order of stability of these three isomers based on their steric energies. and Why.
1.determine the density of the object in gcm3 if an object weighing 1.840 kg has volume of 0.0015m3?2.a man wants to
A certain reaction with an activation energy of 185 kJ/mol was run at 485K and again at 505K. What is the ratio of f at the higher temperature to f at the lower temperature
Calculate E°cell for the reaction between iodine and magnesium. I2(s) + Mg(s) Mg2+(aq) + 2 I-(aq) Use data from a table of standard reduction potentials as needed. possible answers are
A solution is prepared by dissolving 17.6g Ammonium sulfate(NH_4)_2SO_4 (Molar Mass: 132.17g/mol) in enough water to make 121.0mL (0.121L) of stock solution. A 12.30mL (0.0123L) sample of this stock solution is added to 59.00mL of water. Calculate..
A student wrote the reaction scheme below for the grignard synthesis of triphenylmethonal. Explain to the student why this representation of the reaction would not yield the desired product
Assuming 100% yield, calculate the final concentrations of reactants and products. Calculate the pH of the final solution
When an enzyme is purified from a complex mixture of proteins what usually happens to the total amount of protein and the specific activity during the purification process
The solubility product for barium sulfate is 1.10x10-10. Calculate ?G° in kJ/mol at 298 K. Report your answer with one decimal point.
Which of the following addition will result in no change in the pH of the solution a. Adding ammonium nitrate to an ammonia solution.
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