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Determine the magnesium content (in ppm) of a 100.00 mL sample of drinking water if the following data were obtained. Titrant is 0.0551 M EDTA, 12.41 mL were used when an aliquot of the sample was at pH 13.0, 18.63 mL were used for an aliquot at pH 10.5.
what is the molality of a solution of 10g benzophenone and 1mL of cyclohexanone
A ruby laser produces radiation of wavelength 633 nm in pulses with a duration of 1.00*10^-9s. If the laser produces 0.475 J of energy per pulse, how many photons are produced in each pulse?
Calculate the mass of propylene glycol that must be added to 0.330 of water to reduce the vapor pressure by 2.88 torr at 40°C (Pressure of H2O is 55.3 torr at 40°C ).
Strike anywhere matches contain the compound tetraphosphorous trisulfide, which burns to form tetraphosphorus decaoxide and sulfur dioxide gas.
At high temperature, hydrogen and carbon dioxide will reversibly react to form carbon monoxide and water vapor. At 986 degrees C there are 0.11mol of each product and 0.087mol of each reagent in a 1.00L flask. What is Kc under these conditions
what are the boiling point and freezing point of a 1.47m solution of napthalene in benzene
If a 0.100 molar solution of NaOH is added to a solution containing 0.200 molar Ni2+, 0.200 molar Ce3+, and 0.200 molar Cu2+, which metal hydroxide will precipitate first?
A sample of 0.0020 mole of HCl is dissolved in water to make a2000-mL solution. Calculate the molarity of the HCl solution,the [H3O+], and the pH.
Calculate the volume in milliliters of a 0.30 M acetic acid solution that contains 0.0142 mol HC2H3O2.
Four atoms of iron (Fe) are to be combined with three molecules of oxygen (O2). How many total iron atoms and oxygen molecules will be combined during the formation of Fe3O4?
A brand of gasoline has a density of 0.737 at 25 degrees Celsius . How many grams of this gasoline would fill a 13.4 tank?
what concentration of oxygen would be needed to maintain equilibrium in a system where NO and NO2 are known to be at equal concentrations
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