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Menthol is a crystalline substance with a peppermint taste and odor. When 0.829 g of menthol is dissolved in 25.0 g of cyclohexane, the freezing point of the solution is lowered by 4.42 °C. The freezing point and Kf constant for cyclohexane can be found here. Calculate the molar mass of menthol.
Calculate the volume change associated with the adiabatic expansion b) Calculate the heat flow, work and entropy
Fluorine has an average atomic mass of 18.998403 u, and chlorine has an average atomic mass of 35.453 u. How many grams of chlorine contain the same number of atoms as 1.00 g of fluorine
The enthalpy of combustion of benzoic acid (C6H5COOH) which is often used to calibrate calorimeters, is -3226.7 kJ/mol. When 3.4161 g of benzoic acid was burned in a calorimeter, the temperature increased from 20.84 to 25.67C.
acetylene gas c2h2 is produced by adding water to calcium carbide cac2cac2 2h2o gt c2h2 caoh2 .how many grams of
Enough Al2(SO4)3 solid is added to water to prepare 100.0 mL of a 0.150 M solution of aluminum sulfate. What is the concentration of sulfate ion in solution?
calculate how many moles of KIO3 are needed to make 50 ml of 0.20 M solution?
A compound of potassium had the following percentage composition: K 44.90%; H 0.5787%; P 17.78%. The rest was oxygen. Calculate the empirical formula of this compound
A 0.456 gram sample of an unknown mono protic acid (let's call it HZ) was dissolved in some water (you pick the amount). Then the acidic solution was titrated to the equivalence point with 32.5 mL of 0.174 M KOH.
What is the mole fraction of 1.98 m Fe(NO3)3 (aq). The molar mass of Fe..=241.9g/mol and the molar mass of H2O is 18.02 g/mol
what is the partial pressure of NOCl which reacted in order for the partial pressure of NO to be .084 atm? what is the partial pressure of Cl_2 at equilibrium what is the magnitude of K_p for the equation above?
describe the components and internal systems that enable the dental porcelain furnace to operate successfully.discuss
Gasohol contains ethanol (C2H5OH) which when burned reacts with oxygen to produce CO2 (g) and H2O(g). How much heat is produced when 12.5 grams of ethanol burns.
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