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A compound has a molar mass of 180.15 g/mol. Given the following percent composition, calculate the molecular formula
What are the major components of the mixture after acid-base equilibriums have been established if a) half a mol, b) 2 mol of sulfuric acid (H2SO4) are added to a solution of one mol ketone
Calculate the energy of a photon of electromagnetic radiation at each of the following frequencies (in J). 1. 103.7 MHz (typical frequency for FM radio broadcasting) 2. 1100 kHz
the concentration of iodine in sea water is 60. parts per billion by mass. if one assumes that the iodine exists in the
The molar volume of the liquid at this temperature and pressure is 163.3 cm^3/mol. At 100 atm the melting temperature changes to 351.26K. Calculate the enthalpy and entropy of fusion of the solid.
How much heat is emitted when 4.55 of water condenses at 25 ? The heat of vaporization of water at 25 is 44.0.
The reaction caused the temperature of the solution to rise from 21.10 °C to 25.46 °C. If the solution has the same density and specific heat as water, what is Î"H for this reaction (per mole of H2O produced)?
What is the cell potential when the solutions are altered, so [Ag+] = 1.25 M and [Cu+]= 0.25M
how many moles of sodium are there in 2.5 moles of na3po4 and what would the process be for finding the weight of so2
The ratio of the number of atoms of the isotopes Ga-69 and Ga-71 in eight samples from different sources was measured in an effort to understand differences in reported values of the atomic mass of gallium.
at constant external pressure 1.2atm the temperature of 3.25 mol of ideal gas increased from 250k to 305k.calculate the
Compute the freezing point of the solution (assume a density of 1.00 g/ml for water) and Compute the boiling point of the solution (assum a density of 1.00 g/ml for water)
ionization energy involves completely removing an electron from an atom. what wavelength of light is required to remove
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