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The combustion of 40.5 mg of a compound containing C, H and O produces 110.0 mg of CO2 and 22.5 mg of H20. The molar mass of the compound is 162g/mol. Determine its empirical and molecular formulas
If the final concentration of CN- is 0.5 M at equilibrium, what is the equilibrium concentration of uncomplexed Fe3+ ions The Kr of Fe(CN)6 3- is 1.0 x 10^42
Calculate the maximum volume in mL of .15M HCl that each of the following anti-acid formulations would be expected to neutralize. Assume complete neutraliation.
Photomultiplier tube with 9 dynodes and an applied voltage of -90V applied. explain how this set up can generate 10^7 electrons at the anode for each photon hitting the cathode.
A particular reactant decomposes with a half-life of 145 s when its initial concentration is 0.310 M. The same reactant decomposes with a half-life
A solution is created by adding 0.05 moles of H2CO3 (3.1 g, total mass) to 5-L of water, resulting in a pH of 4.2. What is the alkalinity of this water (in meq/L)? Does the answer make sense, why or why not
The air in a laboratory was measured with a barometer to be 7.40 x 102 mm Hg. What is the laboratory air pressure in atm?
Derive an expression for the compression factor of a gas that obeys the equation of state P(V - nb) = nRT
100.g of ice at 0C are added to 300.g of water at 25°C. Is it sufficient ice to lower the temperature of system to 0°C and still have ice remaining
What is the lead concentration of a saturated solution of lead(II) sulfate containing 0.010 molar Na2SO4
if the molecular weight of the compound is 120gmol then compute how many mg of the compound p do you have in 20ml of 4
Comment on the following observation: in its complexes, Co(III) forms strong bonds to O- and N- donor ligands, moderately strong bonds to P- donor ligands
a particular sample of rainwater is 0.2 ppb. Assume the density of rainwater is close to 1.00 g/mL and find the molar concentration of C20H42.
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