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The escape velocity necessary for objects to leave the gravitational field of the earth is 11.2kms-1. calculate the ratio of the escape velocity to the root mean square speed of helium,argon, and xenon atoms a 2000k. does your result help explain the low abundance of helium in the atmosphere? explain.
How reliable is the perfect gas law in comparison with the van der Waals equation? Calculate the difference in pressure of 10.00g of CO2 confined to a volume of 100cm3 at 25 degrees Celsius between treating it as a perfect gas and a van der Waals ..
what mass of calcium carbonate is required to react with 137.8 mL of a 0.6943 M sulfuric acid solution?
Methane and oxygen react in presence of a catalyst to form formaldehyde (desired product). In a parallel reaction, methane is oxidized to form carbon dioxide and water
What observed rotation is expected when a (7.91x10^-1) M solution of (R)-2-butanol (mw = 74.12 g/mol) is mixed with an equal volume of a 0.740 M solution of racemic 2-butanol, and the resulting solution is analyzed in a sample container that is 1 ..
Imagine that you have a 7.00 gas tank and a 3.50 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
a piece of metal with a mass of 151 g is placed in a 50 ml graduated cylinder. the water level rises from 20. ml to 35
Under certain condition for the reaction A ? B, ?H = 14.2 kJ and ?S = 27 J/K. At what temperature in K is the reaction at equilibrium?
Hydrogen sulfide () is a common and troublesome pollutant in industrial wastewaters. One way to remove is to treat the water with chlorine
which produce no significant response to interfering ions. It is then used to measure the pH of 0.0100 M NaOH in 0.50 M NaCl at 25 degrees C. What is the observed pH under these conditions if the true pH is 1.13?
A saturated solution of BiI3(s) is found to have an I- concentration of 3.96E-5 M. What is the value of Ksp for BiI3?
Nicotine has an empirical formula of C5H7N and a molecular mass of 162.23. What is the molecular formula for nicotine?
Biological systems usually work at 65% efficiency. How many mL of ethanol can you obtain from the fermentation of 0.25 lbs of sucrose
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