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Combustion analysis of naphthalene produced 8.80g of CO2 and 1.44 g of H2O.
Calculate the empirical formula for naphthalene
Sodium phosphate is added to a solution that contains 0.0014 M aluminum nitrate and 0.078 M calcium chloride. The concentration of the first ion to precipitate (either Al3+ or Ca2+) decreases as its precipitate forms
If the coefficient of static friction is 0.35 what is the minimum applied force that will move the mass up the incline?
Thin-layer chromatography - Explain how you should apply a spot of compound to the TLC plate in order to get the best results. How do you know if you have overloaded your TLC plate. Why is this a problem
Calculate the volume (L) of Cl2 at a pressure of 0.968 atm and 11 oC that would be required to react with 8.58 g of NaBr according to the balanced equation.
Two identical ballons are filled, one with helium and one with nitrogen, at the same temperature and pressure. if the nitrogen leaks out from its balloon at the rate of 75 ml x h -1 what will be the rate of leakage from the helium filled balloon
Depict the resonance forms for a general carboxylate ion R-CO2 - showing all lone pair electrons for each resonance form as well as assigning formal charge(s).
If an aluminum scuba tank contains compressed air at 2750 psi, what is the pressure in torr
When 27.0 grams of an unknown liquid at 39.00 °C are added to 17.7 grams of 41.70 °C water, the temperature of the final mixture is 39.69 °C. What is the specific heat capacity of the unknown liquid
By how much will the pH change if 25.0 mL of 0.20 M NaOH is added to 0.500 L of a buffer that contains 0.15 M HC2H3O2 (Ka = 1.8 x 10-5) and 0.25 M C2H3O2-
Presume carry out a TLC separation of acetaminophen as well as phenacetin on silica gel using a non-polar developing solvent. Explain which should have the higher R1 value and why
what error would be introduced into the determination of the density of the irregularly shaped metal pellets if you had
the ph for a 2.6 moll propanoic acid solution was 2.24. what is thenbspkanbspof propanoic acid given that propanoic
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