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Suppose 0.7542g of magnesium reacts with excess oxygen to form magnesium oxide product, what would be the theoretical yield of the product?
volume of a piece of galena is 4.7 cm3. determine the mass of that piece of galena if the density of galena is 7.5 gcm3
A compound containing only C, H, and O, was extracted from the bark of a sassafras tree. The combustion of 86.9 mg produced 236 mg of CO2 and 48.3 mg of H2O. The molar mass of the compound was 162 g/mol. Find out its empirical and molecular formul..
Two readings (initial volume and final volume) are required to deliver a specified volume of titrant. For a delivered volume of 6.25 mL, compute the uncertainty in the volume of titrant delivered.
Write the cell notation for an electrochemical cell consisting of an anode where Mg(s) is oxidized to Mg2+(aq) and a cathode where Cr3+(aq)
Determine if the reactants shown on the right would result in the formation of a precipitate. Choices can be used more than one time or not at all.
an equilibrium mixture at 727ordm? contains 0.276 mol h2 0.276 mol co2 224 mol co and 0.224 mol h2o. co2 g h2 g ? co g
Calculate the total pressure (in atm) in the tank at 25°C. First need to calculate the number of moles of each gas added.
Describe what is meant by an amphoteric species. Write the equation for the self ionization of water and know the ion product constant expression for water and its value at 25 degrees.
Calculate the enthalpy change, Delta H, for the process in which 32.6 g of water is converted from liquid at 1.2 C to vapor at 25.0 C. For water, H = 44.0 kJ/mol at 25.0 C and s = 4.18J/g C for H2O(l)
A solution is found to be 0.0370% by weight AlF3. What is the concentration of the F1- ion expressed in ppm
Assuming that a neutron star has the same density as a neutron, calculate the mass (in kg) of a small piece of a neutron star the size of a spherical pebble with a radius of 0.10 mm.
Ionization energy is the energy needed to eject an electron from an atom. Compute the ionization energy of a hydrogen atom in its fourth
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