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The Beer's Law slope for the Fe-phenanthroline complex is found to be 0.2100 L/mg Fe. The absorbance of the diluted unknown solution made in accordance with the instructions in the exercise is found to be X where X=.645. Explain what is the concentration of the original unknown solution?
If a solution is made by adding 83 grams of sodium hyroxide to 750 ml of water what is the percent by mass of sodium hydroxide in this solutions ?
A gas occupies 14.5L at a pressure of .526 atm. What is the volume when the pressure is increased to .780 atm?
an unknown gas effuses at a rate that is only 0.468 times that of o2 at the same temperature. what is the molar mass of
Suppose that you designed a spacecraft to work by photon pressure. The sail was a completely absorbing fabric of area 1.0 km^2 and you directed a red laser beam of wavelength 650 nm on it from a base on the moon. What is the (a) force, (b) pressur..
Peaks that appear to the right of 3000 cm-1 in an IR spectrum are characteristic for which stretching vibration
calculate the pH of this solution after the addition of 4.46 mL of 5.9 M nitric acid. The Kb of ethylamine is 6.4x10-4 some help would be awesome
A 4.0L sample of air collected at 298 K and then cooled to 278F while held at constant pressure. What is the new volume of the air
in the resonance form caused by the delocalization of the immediately adjacent Nitrogen's lone pairs, there is a pi bond.
If a non-cyclic alkane shows a molecular ion peak at m/z 2.4*10^2, what is the chemical formula
suppose that 1.02 of rubbing alcohol evaporates from a 75.0 aluminum block. if the aluminum block is initially at 25c
Chlorine consists of two major isotopes with the following atomic masses: 35Cl (34.9689 amu) and 37Cl (36.9659 amu). The average atomic mass of chlorine is 35.4527 amu.
The proposed mechanism for a reaction is 1. ClO-(aq) + H2O(l) => HClO(aq) + OH-(aq) SLOW 2. I-(aq) + HClO(aq) => HIO(aq) + Cl-(aq) FAST 3. OH-(aq) + HIO(aq) => H2O(l) + IO-(aq) FAST Which of the following would be a rate law for the reaction
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