How many grams of ethyl alcohol added to water
How many grams of ethyl alcohol, C2H5OH, must be added to 1.000 kf of water so that the solution will not freeze until -20 degrees C? For water, Kf= 1.86 degrees C/m.
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Give the molecular formula of a hydrocarbon containing five carbon atom containing five carbon atoms that is (a.) an alkane, (b.) a cycloalkane, (c.) an alkene, (d.) an alkyne.
A 27.0 gram sample of an unknown hydrocarbon is burned in exess oxygen to form 88.0 grams of carbon dioxide and 27.0 grams of water. What is a possible molecular formula of the hydrocarbon
2.55g napthalene dissolved in 30g of benzene. benzene freezes at 5.5C and resulting solution freezes at 2.13C what is the freezing point depression constant of benzene.
Use the balanced equation to calculate how many mL of 0.15M KOH solution will be needed to completely react with 15.0 mL of a 0.20M H2SO4 solution
The chemist discovers a more efficient catalyst that can produce ethyl butyrate with a 78.0g yield. How many grams would be produced from 7.95g of butanoic acid and excess ethanol
Show the mechanism for the aldol condensation product of phenyl acetaldehyde with p-toluenesulfonic acid as a catalyst.
How many grams of NaOH are in a 225.0 mL sample of 2.5 M solution of NaOH.? Molar mass of NaOH is 40.0 g/mol
The substance X is an element which has the elemental form of X(s) at 25oC. The standard enthalpy of formation of HXO4(g) is -818.0 kJ/mol at 25oC. The standard entropy of HXO4 (g) and X(s) are, respectively 175.8 J/mol•K and 30.70 J/(mol&bul
Consider the reaction A? B Assuming ?G?f (A) = 8.066 kJ/mol and ?G?f (B)= 12.24 kJ/mol, what is the equilibrium constant for this reaction at 25 oC
The solubility constant of TlBr is Ksp = 3.6 × 10^-6 and the solubility constant of AgBr is Ksp = 5.0 × 10^-13. Determine the range of NaBr volumes over which each solid precipitates.
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