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In nature, the element X consists of two naturally occurring isotopes. 107X with abundance 54.34% and isotopic mass 106.9051 amu and 109X with isotopic mass 108.9048 amu. Use the given information to calculate the atomic mass of the element X to an accuracy of .001%.
Thus the pressure of the components on the left is P where as the pressure on the components on the right is P+Y. To make this clear I will write the chemical potentials as a function of the pressure (eg u1* (P) for the pure solvent on the left)
a compound contains 10.13 c and 89.87 cl by mass. determine both the empirical formula and the molecular formula of the
At 50 degree's Celsius the vapor pressure for methanol and ethanol are 406 and 222 torr, respectively. Given a mixture at 50 degree's Celsius that contains 0.2 mol of methanol and 0.1 mol of ethanol, compute the partial pressures of each liquid an..
Balance equation. What is the percent yield if 122 grams of SiO2 are made from 246 g of Cr2O3 by the following equation. Si(s) + Cr2O3(s) - - - - > SiO2(s) + Cr(l)
A certain second-order reaction (B--->products) has a rate constant of 2.00×10^-3 M^-1 s^-1 at 27 Celsius and an initial half-life of 214 s. What is the concentration of the reactant after one half-life
The half-life for a first-order reaction is known to be 680 seconds at a given temperature. What is the rate constant at this temperature
Write the structural formulas for the products that form when 1-butene reacts with each of the following reagents: a) HI b) H2, Pt c) Dilute H2SO4, warm d) Cold concentrated H2SO4 e) Cold concentrated H2SO4, then H2O and heat
define in one or two sentences the following terms indicate one step in glycolysis in which they are significant.a
What pressure will the sample have if the volume changes to 268 mL while the temperature is increased to 815 K?
how many moles of hydrogen gas (H2) can be liberated from 104 mol of magnesium hydride if the process operates on 77% efficency?
c8h18l252o2g----gt8co29h2ocalculate delta hrxn for the combustion of octanec8h18 a component of gasoline by using
A cube of metal has a mass of 0.321 kg and measures 3.05 cm on a side. Calculate the density and identify the metal.
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