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Suppose that a hypothetical element consists of a mixture of two isotopes. One isotope, having mass 44 amu, is present in 16.1% abundance, while the other isotope, having mass 46 amu, accounts for the other 83.9%. What should be the experimentally determined atomic weight for this hypothetical element?
Many home barbeques are fueled with propane gas C3H8 What mass of carbon dioxide (in kg}) is produced upon the complete combustion of 18.9 { L} of propane (approximate contents of one 5-gallon tank)
a solution of volume 25.00 ml containing 0.0311 m na2c2o4nbspwas titrated with 0.0257 m laclo43nbspto precipitate
How much energy is released during the complete combustion of 470 grams of cyclobutane
What must the concentration be, of each member of the buffering acid/base pair, if the reaction is expected to release 0.1 millimoles of H+?
The acid-catalyzed addition of alcohols to alkenes occurs via a mechanism analogous to acid-catalyzed alkene hydration. The reaction occurs in 3 steps
Calculate the temperature in Kelvins of 10.2 grams of CO2, an Ideal Gas, trapped in a .0047 L container with a pressure of 300,000 Pa
The Space Shuttle usesaluminum metal and aluminum perchlorate in its reusable boosterrockets. The products of the reactionare aluminum oxide, aluminum chloride, nitrogen oxide gas, andsteam:
A 0.2044 g sample of potassium hydrogen phthalate (KHC8H4O4, a primary standard) was quantitatively transferred to a 100.00 mL volumetric flask and water was added to the mark.
An acetic acid/acetate buffer system would be the best choice for experiments at pH = 5.00. What mass of sodium acetate trihydrate (NaCH3CO2•3H2O)
A fuel cell works on the same principle as a battery but is continually fed with fuel. In one fuel cell, methanol enters on one side of the unit, and air enters on the other side both circulate past electrodes, and a chemical reaction occurs that ..
What is the approximate mass percent of cholesterol in a blood sample having a cholesterol level of 176? Why can you not give a more precise answer
Assume that only a single stream exits the fuel cell. What is the flow rate of each of the species leaving the fuel cell? Not that the flow rates given to correspond a fuel cell rate at approximately 50kW using 2004 technology.
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