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A compound has the forumula M3N Where M is a metal element and N is nitrogen. It contains 0.673 g of N per gram of M. Determine the relative atomic mass of of M and thus its identity.
water softeners often replace calcium ions with in hard water with sodium ions. however the fda recommends that adults
determine the ph of the following solutions, showing calculations.
Calculate the pH of the solution at the equivalence point if the concentration of the ammonium ion (NH4+) produced by the reaction is equal to .0148 M.
A voltaic cell consist of an electrode composed of Sn(s) in a 1.0M Sn2+ ion solution as well as another electrode composed of Zn(s) in a 1.0 M Zn2+ ion solution, connected by a salt bridge. Compute the standard potential for the voltaic cell at 29..
A 2.90-mol sample of N2 occupies 75.0 L at 0.95 atm and 26ºC. What volume will be required to contain a mixture of 2.90 mol of N2 and 2.90 mol of O2 at the same pressure and temperature
what is the wavelength ,in nanometers, of light with an energy content of 1979Kj/mol. In what portion of the electromagnetic spectrum in this light
Calculate the number of moles of NaHCO3 that reacted in each beaker. (The molar ratio between evolved CO2 and the bicarbonate is 1:1.
Determine the value of Keq for Ca3(PO4)2 (Ksp=2.0*10-33) dissolving in acid solution, given that Ka2=6.17*10-8, Ka3=4.79*10-13 for H3PO4.
Calculate the theoretical yield of aspirin to be obtained, starting with 2.0 g of salicylic acid. 2. If 1.8 g of aspirin were obtained in this experiment, what would be the percent yield?
How much heat energy is required to raise the temperature of 0.362kg of copper from 23.0 °C to 60.0 °C? The specific heat of copper is 0.0920 cal/(g·°C) .
What is the pH of solution at the second equivalence point? The acid dissociation constants for carbonic acid are pK1=6.35, pK2=10.33
Question- A solution contains naphthalene (C10H8)dissolved in hexane (C6H14) at a concentration of 11.70% naphthalene by mass. Calculate the vapor pressure at 25 ?C of hexane above the solution. The vapor pressure of pure hexane at 25 C is 151 torr.
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