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Citric acid, a flavoring agent in many carbonated beverages, has a molecular mass of 192 and a percent of composition by mass of 37.50% C, 4.2% H, and 8.29% O. Determine the molecular formula of citric acid.
the density of the compound as a gas was found to be 4.02g/L at 127 degrees C and 256 torr. What are the empirical and molecular formulas of the compound
What is the pH of a solution containing 0.24 moles of ammonia and 17.8g of ammonium chloride, NH4Cl. Kb for ammonia is 1.8 times 10, What is the PH of a 0.085M solution of ammoniun chloride. Kb for ammonia is 1.8 times 10
0.22 litre of an idealmonatomic gas cv 3r2 initially at 12 deg c and 1.7 atmpressure undergo an expansion against a
At constant pressure, the combustion of C2H6 releases 259 kJ of heat. Find delta H for the rxn: 2 C2H6 (g) + 7O2 (g) -> 4CO2 (g) + 6H20(l)
How much heat (in J) is evolved or absorbed when a 36.9 g sample of water (specific heat = 4.18 J/(g K)) cools from 87.7oC to 79.2oC
Calculate the potential delivered by a voltaic cell operating by the following reaction if all of the dissolved species have a concentration of 0.035 and the pressure of H2 (g) is 1.00 atm.
Calculate the value of E^o cell for the reaction 2Ag(s) + Ca2+ (aq) yields 2Ag+(aq)+Ca(s), using the standard reduction potentials
This solution was back-titrated with a 0.0370 M Ga3 solution until all the EDTA reacted, requiring 11.0 mL of the Ga3 solution. What was the original concentration of the V3 solution?
Explain why the major product of bromination of vanillin was 5 bromovanillin and not 2 bromovanillin or 6 bromovanillin.
Explain why heat change at constant pressure and constant volume have definite values.explain the terms exothermic endothermic and heat of reaction.
In the reaction between p-aminophenol and aetic anhydride to form acetaminophen, 0.450 mL of water was added. What was the purpose of the water
The weathering of pyrite (FeS2) in coal mines and in metal sulfide ore deposits can be represented by the following reaction
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